55556260761 has 16 divisors (see below), whose sum is σ = 74955326400. Its totient is φ = 36597884928.

The previous prime is 55556260759. The next prime is 55556260769. The reversal of 55556260761 is 16706265555.

It is a happy number.

It is not a de Polignac number, because 55556260761 - 2¹ = 55556260759 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55556260761.

It is not an unprimeable number, because it can be changed into a prime (55556260769) 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, 355705 + ... + 487481.

It is an arithmetic number, because the mean of its divisors is an integer number (4684707900).

Almost surely, 2^55556260761 is an apocalyptic number.

It is an amenable number.

55556260761 is a deficient number, since it is larger than the sum of its proper divisors (19399065639).

55556260761 is a wasteful number, since it uses less digits than its factorization.

55556260761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133448.

The product of its (nonzero) digits is 1890000, while the sum is 48.

The spelling of 55556260761 in words is "fifty-five billion, five hundred fifty-six million, two hundred sixty thousand, seven hundred sixty-one".