61002436128 has 24 divisors (see below), whose sum is σ = 160131395088. Its totient is φ = 20334145344.

The previous prime is 61002436123. The next prime is 61002436141. The reversal of 61002436128 is 82163420016.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (61002436123) 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, 317720926 + ... + 317721117.

It is an arithmetic number, because the mean of its divisors is an integer number (6672141462).

Almost surely, 2^61002436128 is an apocalyptic number.

It is an amenable number.

61002436128 is an abundant number, since it is smaller than the sum of its proper divisors (99128958960).

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

61002436128 is a wasteful number, since it uses less digits than its factorization.

61002436128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635442056 (or 635442048 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The spelling of 61002436128 in words is "sixty-one billion, two million, four hundred thirty-six thousand, one hundred twenty-eight".