54123355215 has 24 divisors (see below), whose sum is σ = 94145335440. Its totient is φ = 28763783424.

The previous prime is 54123355213. The next prime is 54123355249. The reversal of 54123355215 is 51255332145.

54123355215 is a `hidden beast` number, since 5 + 4 + 123 + 3 + 5 + 521 + 5 = 666.

It is not a de Polignac number, because 54123355215 - 2¹ = 54123355213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54123355215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54123355213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2112250 + ... + 2137719.

It is an arithmetic number, because the mean of its divisors is an integer number (3922722310).

Almost surely, 2^54123355215 is an apocalyptic number.

54123355215 is a deficient number, since it is larger than the sum of its proper divisors (40021980225).

54123355215 is a wasteful number, since it uses less digits than its factorization.

54123355215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4250263 (or 4250260 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

The spelling of 54123355215 in words is "fifty-four billion, one hundred twenty-three million, three hundred fifty-five thousand, two hundred fifteen".