138453354831 has 32 divisors (see below), whose sum is σ = 207717689088. Its totient is φ = 81292688640.

The previous prime is 138453354763. The next prime is 138453354841.

138453354831 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 138453354831 - 2⁷ = 138453354703 is a prime.

It is a super-2 number, since 2×138453354831² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138453354841) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41160 + ... + 527826.

It is an arithmetic number, because the mean of its divisors is an integer number (6491177784).

Almost surely, 2^138453354831 is an apocalyptic number.

138453354831 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

138453354831 is a deficient number, since it is larger than the sum of its proper divisors (69264334257).

138453354831 is a wasteful number, since it uses less digits than its factorization.

138453354831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486951.

The product of its digits is 2073600, while the sum is 48.

The spelling of 138453354831 in words is "one hundred thirty-eight billion, four hundred fifty-three million, three hundred fifty-four thousand, eight hundred thirty-one".