55740497693567 has 4 divisors (see below), whose sum is σ = 56261436924456. Its totient is φ = 55219558462680.

The previous prime is 55740497693557. The next prime is 55740497693581. The reversal of 55740497693567 is 76539679404755.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55740497693567 - 2³² = 55736202726271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55740497693557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260469615284 + ... + 260469615497.

It is an arithmetic number, because the mean of its divisors is an integer number (14065359231114).

Almost surely, 2^{55740497693567} is an apocalyptic number.

55740497693567 is a deficient number, since it is larger than the sum of its proper divisors (520939230889).

55740497693567 is a wasteful number, since it uses less digits than its factorization.

55740497693567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520939230888.

The product of its (nonzero) digits is 6001128000, while the sum is 77.

The spelling of 55740497693567 in words is "fifty-five trillion, seven hundred forty billion, four hundred ninety-seven million, six hundred ninety-three thousand, five hundred sixty-seven".