61156716501566 has 48 divisors (see below), whose sum is σ = 112765740354000. Its totient is φ = 24733929443328.

The previous prime is 61156716501557. The next prime is 61156716501577. The reversal of 61156716501566 is 66510561765116.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63421541 + ... + 64378608.

It is an arithmetic number, because the mean of its divisors is an integer number (2349286257375).

Almost surely, 2^{61156716501566} is an apocalyptic number.

61156716501566 is a deficient number, since it is larger than the sum of its proper divisors (51609023852434).

61156716501566 is a wasteful number, since it uses less digits than its factorization.

61156716501566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127800441 (or 127800434 counting only the distinct ones).

The product of its (nonzero) digits is 6804000, while the sum is 56.

The spelling of 61156716501566 in words is "sixty-one trillion, one hundred fifty-six billion, seven hundred sixteen million, five hundred one thousand, five hundred sixty-six".