61530104771730 has 96 divisors (see below), whose sum is σ = 187084225620864. Its totient is φ = 13736953617408.

The previous prime is 61530104771719. The next prime is 61530104771747. The reversal of 61530104771730 is 3717740103516.

61530104771730 is a `hidden beast` number, since 6 + 1 + 5 + 3 + 0 + 1 + 0 + 477 + 173 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1135633759 + ... + 1135687938.

It is an arithmetic number, because the mean of its divisors is an integer number (1948794016884).

Almost surely, 2^{61530104771730} is an apocalyptic number.

61530104771730 is an abundant number, since it is smaller than the sum of its proper divisors (125554120849134).

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

61530104771730 is a wasteful number, since it uses less digits than its factorization.

61530104771730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2271321760 (or 2271321757 counting only the distinct ones).

The product of its (nonzero) digits is 370440, while the sum is 45.

The spelling of 61530104771730 in words is "sixty-one trillion, five hundred thirty billion, one hundred four million, seven hundred seventy-one thousand, seven hundred thirty".