55644012605 has 8 divisors (see below), whose sum is σ = 67282532064. Its totient is φ = 44175398800.

The previous prime is 55644012569. The next prime is 55644012623. The reversal of 55644012605 is 50621044655.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55644012605 - 2²⁶ = 55576903741 is a prime.

It is a super-2 number, since 2×55644012605² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42475691 + ... + 42477000.

It is an arithmetic number, because the mean of its divisors is an integer number (8410316508).

Almost surely, 2^55644012605 is an apocalyptic number.

It is an amenable number.

55644012605 is a deficient number, since it is larger than the sum of its proper divisors (11638519459).

55644012605 is a wasteful number, since it uses less digits than its factorization.

55644012605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84952827.

The product of its (nonzero) digits is 144000, while the sum is 38.

The spelling of 55644012605 in words is "fifty-five billion, six hundred forty-four million, twelve thousand, six hundred five".