61152656128 has 72 divisors (see below), whose sum is σ = 127535788800. Its totient is φ = 29209703424.

The previous prime is 61152656119. The next prime is 61152656189. The reversal of 61152656128 is 82165625116.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4933843 + ... + 4946221.

It is an arithmetic number, because the mean of its divisors is an integer number (1771330400).

Almost surely, 2^61152656128 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 61152656128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63767894400).

61152656128 is an abundant number, since it is smaller than the sum of its proper divisors (66383132672).

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

61152656128 is a wasteful number, since it uses less digits than its factorization.

61152656128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13257 (or 13243 counting only the distinct ones).

The product of its digits is 172800, while the sum is 43.

The spelling of 61152656128 in words is "sixty-one billion, one hundred fifty-two million, six hundred fifty-six thousand, one hundred twenty-eight".