54312693891 has 16 divisors (see below), whose sum is σ = 75399319968. Its totient is φ = 34746220800.

The previous prime is 54312693871. The next prime is 54312693931. The reversal of 54312693891 is 19839621345.

It is not a de Polignac number, because 54312693891 - 2¹¹ = 54312691843 is a prime.

It is a super-3 number, since 3×54312693891³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (54312693871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3611896 + ... + 3626901.

It is an arithmetic number, because the mean of its divisors is an integer number (4712457498).

Almost surely, 2^54312693891 is an apocalyptic number.

54312693891 is a deficient number, since it is larger than the sum of its proper divisors (21086626077).

54312693891 is a wasteful number, since it uses less digits than its factorization.

54312693891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7238902.

The product of its digits is 1399680, while the sum is 51.

The spelling of 54312693891 in words is "fifty-four billion, three hundred twelve million, six hundred ninety-three thousand, eight hundred ninety-one".