61257602884 has 12 divisors (see below), whose sum is σ = 109223462124. Its totient is φ = 30050899424.

The previous prime is 61257602867. The next prime is 61257602899. The reversal of 61257602884 is 48820675216.

61257602884 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 53350836484 + 7906766400 = 230978^2 + 88920^2 .

It is a super-2 number, since 2×61257602884² (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 3 ways as a sum of consecutive naturals, for example, 144475267 + ... + 144475690.

It is an arithmetic number, because the mean of its divisors is an integer number (9101955177).

Almost surely, 2^61257602884 is an apocalyptic number.

It is an amenable number.

61257602884 is a deficient number, since it is larger than the sum of its proper divisors (47965859240).

61257602884 is a wasteful number, since it uses less digits than its factorization.

61257602884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288951014 (or 288951012 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 49.

The spelling of 61257602884 in words is "sixty-one billion, two hundred fifty-seven million, six hundred two thousand, eight hundred eighty-four".