61156265532 has 24 divisors (see below), whose sum is σ = 143007505872. Its totient is φ = 20341200000.

The previous prime is 61156265503. The next prime is 61156265537. The reversal of 61156265532 is 23556265116.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61156265537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5521969 + ... + 5533032.

It is an arithmetic number, because the mean of its divisors is an integer number (5958646078).

Almost surely, 2^61156265532 is an apocalyptic number.

It is an amenable number.

61156265532 is an abundant number, since it is smaller than the sum of its proper divisors (81851240340).

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

61156265532 is a wasteful number, since it uses less digits than its factorization.

61156265532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11055469 (or 11055467 counting only the distinct ones).

The product of its digits is 324000, while the sum is 42.

The spelling of 61156265532 in words is "sixty-one billion, one hundred fifty-six million, two hundred sixty-five thousand, five hundred thirty-two".