137231975051 has 4 divisors (see below), whose sum is σ = 144454710600. Its totient is φ = 130009239504.

The previous prime is 137231975033. The next prime is 137231975147. The reversal of 137231975051 is 150579132731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150579132731 = 17 ⋅8857596043.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137231975051 is a prime.

It is a super-2 number, since 2×137231975051² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 137231974993 and 137231975011.

It is not an unprimeable number, because it can be changed into a prime (137231975021) 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, 3611367746 + ... + 3611367783.

It is an arithmetic number, because the mean of its divisors is an integer number (36113677650).

Almost surely, 2^137231975051 is an apocalyptic number.

137231975051 is a deficient number, since it is larger than the sum of its proper divisors (7222735549).

137231975051 is an equidigital number, since it uses as much as digits as its factorization.

137231975051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7222735548.

The product of its (nonzero) digits is 198450, while the sum is 44.

The spelling of 137231975051 in words is "one hundred thirty-seven billion, two hundred thirty-one million, nine hundred seventy-five thousand, fifty-one".