55271330746561 has 16 divisors (see below), whose sum is σ = 59411187884160. Its totient is φ = 51290610743680.

The previous prime is 55271330746531. The next prime is 55271330746589. The reversal of 55271330746561 is 16564703317255.

It is a cyclic number.

It is not a de Polignac number, because 55271330746561 - 2²¹ = 55271328649409 is a prime.

It is a super-2 number, since 2×55271330746561² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55271330746501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163552510 + ... + 163890103.

It is an arithmetic number, because the mean of its divisors is an integer number (3713199242760).

Almost surely, 2^{55271330746561} is an apocalyptic number.

It is an amenable number.

55271330746561 is a deficient number, since it is larger than the sum of its proper divisors (4139857137599).

55271330746561 is a wasteful number, since it uses less digits than its factorization.

55271330746561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327442856.

The product of its (nonzero) digits is 15876000, while the sum is 55.

The spelling of 55271330746561 in words is "fifty-five trillion, two hundred seventy-one billion, three hundred thirty million, seven hundred forty-six thousand, five hundred sixty-one".