54621177138738 has 64 divisors (see below), whose sum is σ = 138985690245120. Its totient is φ = 15576211069776.

The previous prime is 54621177138719. The next prime is 54621177138761. The reversal of 54621177138738 is 83783177112645.

54621177138738 is a `hidden beast` number, since 5 + 4 + 6 + 211 + 7 + 7 + 1 + 387 + 38 = 666.

It is a super-4 number, since 4×54621177138738⁴ (a number of 56 digits) contains 4444 as substring.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137948070 + ... + 138343457.

It is an arithmetic number, because the mean of its divisors is an integer number (2171651410080).

Almost surely, 2^{54621177138738} is an apocalyptic number.

54621177138738 is an abundant number, since it is smaller than the sum of its proper divisors (84364513106382).

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

54621177138738 is a wasteful number, since it uses less digits than its factorization.

54621177138738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276292068 (or 276292062 counting only the distinct ones).

The product of its digits is 47416320, while the sum is 63.

The spelling of 54621177138738 in words is "fifty-four trillion, six hundred twenty-one billion, one hundred seventy-seven million, one hundred thirty-eight thousand, seven hundred thirty-eight".