138554463751 has 4 divisors (see below), whose sum is σ = 151150324104. Its totient is φ = 125958603400.

The previous prime is 138554463713. The next prime is 138554463767. The reversal of 138554463751 is 157364455831.

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 138554463751 - 2²⁷ = 138420246023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138554464751) 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, 6297930160 + ... + 6297930181.

It is an arithmetic number, because the mean of its divisors is an integer number (37787581026).

Almost surely, 2^138554463751 is an apocalyptic number.

138554463751 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

138554463751 is a deficient number, since it is larger than the sum of its proper divisors (12595860353).

138554463751 is a wasteful number, since it uses less digits than its factorization.

138554463751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12595860352.

The product of its digits is 6048000, while the sum is 52.

The spelling of 138554463751 in words is "one hundred thirty-eight billion, five hundred fifty-four million, four hundred sixty-three thousand, seven hundred fifty-one".