61309596192256 has 160 divisors (see below), whose sum is σ = 129361171024800. Its totient is φ = 28948172636160.

The previous prime is 61309596192227. The next prime is 61309596192259. The reversal of 61309596192256 is 65229169590316.

It is a super-2 number, since 2×61309596192256² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61309596192259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5940271576 + ... + 5940281896.

It is an arithmetic number, because the mean of its divisors is an integer number (808507318905).

Almost surely, 2^{61309596192256} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61309596192256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64680585512400).

61309596192256 is an abundant number, since it is smaller than the sum of its proper divisors (68051574832544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61309596192256 is a wasteful number, since it uses less digits than its factorization.

61309596192256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12260 (or 12244 counting only the distinct ones).

The product of its (nonzero) digits is 47239200, while the sum is 64.

The spelling of 61309596192256 in words is "sixty-one trillion, three hundred nine billion, five hundred ninety-six million, one hundred ninety-two thousand, two hundred fifty-six".