Search a number
-
+
61517710313 = 193237774227
BaseRepresentation
bin111001010010101111…
…011100001111101001
312212210021102110220022
4321102233130033221
52001442013212223
644132202010225
74305315624053
oct712257341751
9185707373808
1061517710313
11240a9164304
12bb0a1a6975
135a55010627
142d982868d3
151900ae9ac8
hexe52bdc3e9

61517710313 has 4 divisors (see below), whose sum is σ = 64755484560. Its totient is φ = 58279936068.

The previous prime is 61517710307. The next prime is 61517710321. The reversal of 61517710313 is 31301771516.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61517710313 - 28 = 61517710057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61517710343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1618887095 + ... + 1618887132.

It is an arithmetic number, because the mean of its divisors is an integer number (16188871140).

Almost surely, 261517710313 is an apocalyptic number.

It is an amenable number.

61517710313 is a deficient number, since it is larger than the sum of its proper divisors (3237774247).

61517710313 is a wasteful number, since it uses less digits than its factorization.

61517710313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3237774246.

The product of its (nonzero) digits is 13230, while the sum is 35.

The spelling of 61517710313 in words is "sixty-one billion, five hundred seventeen million, seven hundred ten thousand, three hundred thirteen".

Divisors: 1 19 3237774227 61517710313