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30653686381 = 37983996401
BaseRepresentation
bin11100100011000110…
…100010001001101101
32221010022022121111211
4130203012202021231
51000234320431011
622025422514421
72133425015023
oct344306421155
987108277454
1030653686381
111200023030a
125b35a35a11
132b76939c86
1416ab1a8713
15be61edb21
hex7231a226d

30653686381 has 8 divisors (see below), whose sum is σ = 30771518400. Its totient is φ = 30536049600.

The previous prime is 30653686363. The next prime is 30653686417. The reversal of 30653686381 is 18368635603.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30653686381 - 27 = 30653686253 is a prime.

It is a super-2 number, since 2×306536863812 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30653686351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269781 + ... + 366181.

It is an arithmetic number, because the mean of its divisors is an integer number (3846439800).

Almost surely, 230653686381 is an apocalyptic number.

It is an amenable number.

30653686381 is a deficient number, since it is larger than the sum of its proper divisors (117832019).

30653686381 is an equidigital number, since it uses as much as digits as its factorization.

30653686381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97619.

The product of its (nonzero) digits is 1866240, while the sum is 49.

The spelling of 30653686381 in words is "thirty billion, six hundred fifty-three million, six hundred eighty-six thousand, three hundred eighty-one".

Divisors: 1 379 839 96401 317981 36535979 80880439 30653686381