61537003065 has 192 divisors, whose sum is σ = 120191385600. Its totient is φ = 28992038400.

The previous prime is 61537003061. The next prime is 61537003097. The reversal of 61537003065 is 56030073516.

It is a happy number.

61537003065 is a `hidden beast` number, since 61 + 537 + 0 + 0 + 3 + 0 + 65 = 666.

61537003065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61537003065 - 2² = 61537003061 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61537003061) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 128469496 + ... + 128469974.

It is an arithmetic number, because the mean of its divisors is an integer number (625996800).

Almost surely, 2^61537003065 is an apocalyptic number.

It is an amenable number.

61537003065 is a deficient number, since it is larger than the sum of its proper divisors (58654382535).

61537003065 is a wasteful number, since it uses less digits than its factorization.

61537003065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708 (or 705 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 36.

The spelling of 61537003065 in words is "sixty-one billion, five hundred thirty-seven million, three thousand, sixty-five".