55726620123 has 16 divisors (see below), whose sum is σ = 74573291520. Its totient is φ = 37015713504.

The previous prime is 55726620113. The next prime is 55726620127. The reversal of 55726620123 is 32102662755.

It is a happy number.

It is not a de Polignac number, because 55726620123 - 2¹⁰ = 55726619099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55726620127) 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, 1127590 + ... + 1175972.

It is an arithmetic number, because the mean of its divisors is an integer number (4660830720).

Almost surely, 2^55726620123 is an apocalyptic number.

55726620123 is a deficient number, since it is larger than the sum of its proper divisors (18846671397).

55726620123 is a wasteful number, since it uses less digits than its factorization.

55726620123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49778.

The product of its (nonzero) digits is 151200, while the sum is 39.

The spelling of 55726620123 in words is "fifty-five billion, seven hundred twenty-six million, six hundred twenty thousand, one hundred twenty-three".