61504456937 has 12 divisors (see below), whose sum is σ = 77261798208. Its totient is φ = 47925550200.

The previous prime is 61504456807. The next prime is 61504456967. The reversal of 61504456937 is 73965440516.

It is not a de Polignac number, because 61504456937 - 2¹⁸ = 61504194793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61504456967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36306389 + ... + 36308082.

It is an arithmetic number, because the mean of its divisors is an integer number (6438483184).

Almost surely, 2^61504456937 is an apocalyptic number.

It is an amenable number.

61504456937 is a deficient number, since it is larger than the sum of its proper divisors (15757341271).

61504456937 is a wasteful number, since it uses less digits than its factorization.

61504456937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72614500 (or 72614489 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 50.

The spelling of 61504456937 in words is "sixty-one billion, five hundred four million, four hundred fifty-six thousand, nine hundred thirty-seven".