61814614504 has 8 divisors (see below), whose sum is σ = 115902402210. Its totient is φ = 30907307248.

The previous prime is 61814614501. The next prime is 61814614541. The reversal of 61814614504 is 40541641816.

It can be written as a sum of positive squares in only one way, i.e., 37481734404 + 24332880100 = 193602^2 + 155990^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (61814614501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3863413399 + ... + 3863413414.

Almost surely, 2^61814614504 is an apocalyptic number.

It is an amenable number.

61814614504 is a deficient number, since it is larger than the sum of its proper divisors (54087787706).

61814614504 is a wasteful number, since it uses less digits than its factorization.

61814614504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7726826819 (or 7726826815 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 61814614504 in words is "sixty-one billion, eight hundred fourteen million, six hundred fourteen thousand, five hundred four".