61761156519072 has 96 divisors (see below), whose sum is σ = 162908552588544. Its totient is φ = 20487544704000.

The previous prime is 61761156519059. The next prime is 61761156519091. The reversal of 61761156519072 is 27091565116716.

It is a tau number, because it is divible by the number of its divisors (96).

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, 14546322 + ... + 18306222.

It is an arithmetic number, because the mean of its divisors is an integer number (1696964089464).

Almost surely, 2^{61761156519072} is an apocalyptic number.

It is an amenable number.

61761156519072 is an abundant number, since it is smaller than the sum of its proper divisors (101147396069472).

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

61761156519072 is a wasteful number, since it uses less digits than its factorization.

61761156519072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3760742 (or 3760734 counting only the distinct ones).

The product of its (nonzero) digits is 4762800, while the sum is 57.

The spelling of 61761156519072 in words is "sixty-one trillion, seven hundred sixty-one billion, one hundred fifty-six million, five hundred nineteen thousand, seventy-two".