54195390128 has 40 divisors (see below), whose sum is σ = 115252165056. Its totient is φ = 24483124800.

The previous prime is 54195390113. The next prime is 54195390131. The reversal of 54195390128 is 82109359145.

It is a super-2 number, since 2×54195390128² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 915878 + ... + 973253.

Almost surely, 2^54195390128 is an apocalyptic number.

It is an amenable number.

54195390128 is an abundant number, since it is smaller than the sum of its proper divisors (61056774928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54195390128 is a wasteful number, since it uses less digits than its factorization.

54195390128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889313 (or 1889307 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 47.

The spelling of 54195390128 in words is "fifty-four billion, one hundred ninety-five million, three hundred ninety thousand, one hundred twenty-eight".