137138512551 has 4 divisors (see below), whose sum is σ = 182851350072. Its totient is φ = 91425675032.

The previous prime is 137138512549. The next prime is 137138512573. The reversal of 137138512551 is 155215831731.

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 137138512551 - 2¹ = 137138512549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137138512541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22856418756 + ... + 22856418761.

It is an arithmetic number, because the mean of its divisors is an integer number (45712837518).

Almost surely, 2^137138512551 is an apocalyptic number.

137138512551 is a deficient number, since it is larger than the sum of its proper divisors (45712837521).

137138512551 is an equidigital number, since it uses as much as digits as its factorization.

137138512551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45712837520.

The product of its digits is 126000, while the sum is 42.

The spelling of 137138512551 in words is "one hundred thirty-seven billion, one hundred thirty-eight million, five hundred twelve thousand, five hundred fifty-one".