61836256832 has 28 divisors (see below), whose sum is σ = 140235797760. Its totient is φ = 26501252736.

The previous prime is 61836256819. The next prime is 61836256837. The reversal of 61836256832 is 23865263816.

It is a tau number, because it is divible by the number of its divisors (28).

It is not an unprimeable number, because it can be changed into a prime (61836256837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69013232 + ... + 69014127.

Almost surely, 2^61836256832 is an apocalyptic number.

It is an amenable number.

61836256832 is an abundant number, since it is smaller than the sum of its proper divisors (78399540928).

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

61836256832 is a wasteful number, since it uses less digits than its factorization.

61836256832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138027378 (or 138027368 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 50.

The spelling of 61836256832 in words is "sixty-one billion, eight hundred thirty-six million, two hundred fifty-six thousand, eight hundred thirty-two".