61630515461 has 16 divisors (see below), whose sum is σ = 63298464768. Its totient is φ = 59977974000.

The previous prime is 61630515439. The next prime is 61630515491. The reversal of 61630515461 is 16451503616.

It is a cyclic number.

It is not a de Polignac number, because 61630515461 - 2³⁴ = 44450646277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61630515431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14387426 + ... + 14391708.

It is an arithmetic number, because the mean of its divisors is an integer number (3956154048).

Almost surely, 2^61630515461 is an apocalyptic number.

It is an amenable number.

61630515461 is a deficient number, since it is larger than the sum of its proper divisors (1667949307).

61630515461 is a wasteful number, since it uses less digits than its factorization.

61630515461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5992.

The product of its (nonzero) digits is 64800, while the sum is 38.

The spelling of 61630515461 in words is "sixty-one billion, six hundred thirty million, five hundred fifteen thousand, four hundred sixty-one".