61612756530 has 32 divisors (see below), whose sum is σ = 159245279424. Its totient is φ = 15166216896.

The previous prime is 61612756501. The next prime is 61612756553. The reversal of 61612756530 is 3565721616.

It is a super-2 number, since 2×61612756530² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78990324 + ... + 78991103.

It is an arithmetic number, because the mean of its divisors is an integer number (4976414982).

Almost surely, 2^61612756530 is an apocalyptic number.

61612756530 is an abundant number, since it is smaller than the sum of its proper divisors (97632522894).

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

61612756530 is a wasteful number, since it uses less digits than its factorization.

61612756530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157981450.

The product of its (nonzero) digits is 226800, while the sum is 42.

The spelling of 61612756530 in words is "sixty-one billion, six hundred twelve million, seven hundred fifty-six thousand, five hundred thirty".