54001172405399 has 4 divisors (see below), whose sum is σ = 54001208423136. Its totient is φ = 54001136387664.

The previous prime is 54001172405359. The next prime is 54001172405407. The reversal of 54001172405399 is 99350427110045.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 54001172405399 - 2³⁶ = 53932452928663 is a prime.

It is a super-2 number, since 2×54001172405399² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54001172405359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15657599 + ... + 18792624.

It is an arithmetic number, because the mean of its divisors is an integer number (13500302105784).

Almost surely, 2^{54001172405399} is an apocalyptic number.

54001172405399 is a deficient number, since it is larger than the sum of its proper divisors (36017737).

54001172405399 is a wasteful number, since it uses less digits than its factorization.

54001172405399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36017736.

The product of its (nonzero) digits is 1360800, while the sum is 50.

The spelling of 54001172405399 in words is "fifty-four trillion, one billion, one hundred seventy-two million, four hundred five thousand, three hundred ninety-nine".