54040139278 has 4 divisors (see below), whose sum is σ = 81060208920. Its totient is φ = 27020069638.

The previous prime is 54040139261. The next prime is 54040139287. The reversal of 54040139278 is 87293104045.

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

It is a super-2 number, since 2×54040139278² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13510034818 + ... + 13510034821.

It is an arithmetic number, because the mean of its divisors is an integer number (20265052230).

Almost surely, 2^54040139278 is an apocalyptic number.

54040139278 is a deficient number, since it is larger than the sum of its proper divisors (27020069642).

54040139278 is a wasteful number, since it uses less digits than its factorization.

54040139278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27020069641.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 54040139278 in words is "fifty-four billion, forty million, one hundred thirty-nine thousand, two hundred seventy-eight".