137975197251 has 8 divisors (see below), whose sum is σ = 183974503104. Its totient is φ = 91979678120.

The previous prime is 137975197223. The next prime is 137975197271. The reversal of 137975197251 is 152791579731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 137975197251 - 2¹¹ = 137975195203 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 137975197191 and 137975197200.

It is not an unprimeable number, because it can be changed into a prime (137975197211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 860541 + ... + 1008206.

It is an arithmetic number, because the mean of its divisors is an integer number (22996812888).

Almost surely, 2^137975197251 is an apocalyptic number.

137975197251 is a deficient number, since it is larger than the sum of its proper divisors (45999305853).

137975197251 is a wasteful number, since it uses less digits than its factorization.

137975197251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1893361.

The product of its digits is 4167450, while the sum is 57.

The spelling of 137975197251 in words is "one hundred thirty-seven billion, nine hundred seventy-five million, one hundred ninety-seven thousand, two hundred fifty-one".