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101663688550 = 25219107014409
BaseRepresentation
bin101111010101110100…
…0001100011101100110
3100201102010011110220011
41132223220030131212
53131201401013200
6114411553400434
710226215044304
oct1365350143546
9321363143804
10101663688550
113a12a557a16
1217852b6911a
1397823b4338
144cc5db3274
1529a03195ba
hex17aba0c766

101663688550 has 24 divisors (see below), whose sum is σ = 199046802600. Its totient is φ = 38525186880.

The previous prime is 101663688523. The next prime is 101663688551. The reversal of 101663688550 is 55886366101.

It is a super-2 number, since 2×1016636885502 (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 101663688494 and 101663688503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101663688551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53506255 + ... + 53508154.

It is an arithmetic number, because the mean of its divisors is an integer number (8293616775).

Almost surely, 2101663688550 is an apocalyptic number.

101663688550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101663688550 is a deficient number, since it is larger than the sum of its proper divisors (97383114050).

101663688550 is a wasteful number, since it uses less digits than its factorization.

101663688550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107014440 (or 107014435 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 49.

The spelling of 101663688550 in words is "one hundred one billion, six hundred sixty-three million, six hundred eighty-eight thousand, five hundred fifty".

Divisors: 1 2 5 10 19 25 38 50 95 190 475 950 107014409 214028818 535072045 1070144090 2033273771 2675360225 4066547542 5350720450 10166368855 20332737710 50831844275 101663688550