55238623815 has 8 divisors (see below), whose sum is σ = 88381798128. Its totient is φ = 29460599360.

The previous prime is 55238623813. The next prime is 55238623859. The reversal of 55238623815 is 51832683255.

55238623815 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 55238623815 - 2¹ = 55238623813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55238623813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1841287446 + ... + 1841287475.

It is an arithmetic number, because the mean of its divisors is an integer number (11047724766).

Almost surely, 2^55238623815 is an apocalyptic number.

55238623815 is a deficient number, since it is larger than the sum of its proper divisors (33143174313).

55238623815 is a wasteful number, since it uses less digits than its factorization.

55238623815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3682574929.

The product of its digits is 1728000, while the sum is 48.

It can be divided in two parts, 552386 and 23815, that added together give a triangular number (576201 = T₁₀₇₃).

The spelling of 55238623815 in words is "fifty-five billion, two hundred thirty-eight million, six hundred twenty-three thousand, eight hundred fifteen".