55915255193919 has 32 divisors (see below), whose sum is σ = 85616785397760. Its totient is φ = 32102610962400.

The previous prime is 55915255193899. The next prime is 55915255193923. The reversal of 55915255193919 is 91939155251955.

It is not a de Polignac number, because 55915255193919 - 2¹⁵ = 55915255161151 is a prime.

It is a super-2 number, since 2×55915255193919² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55915255193929) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8417574 + ... + 13516140.

It is an arithmetic number, because the mean of its divisors is an integer number (2675524543680).

Almost surely, 2^{55915255193919} is an apocalyptic number.

55915255193919 is a deficient number, since it is larger than the sum of its proper divisors (29701530203841).

55915255193919 is a wasteful number, since it uses less digits than its factorization.

55915255193919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5116091.

The product of its digits is 123018750, while the sum is 69.

The spelling of 55915255193919 in words is "fifty-five trillion, nine hundred fifteen billion, two hundred fifty-five million, one hundred ninety-three thousand, nine hundred nineteen".