137430263251 has 4 divisors (see below), whose sum is σ = 143405492112. Its totient is φ = 131455034392.

The previous prime is 137430263221. The next prime is 137430263263. The reversal of 137430263251 is 152362034731.

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 137430263251 - 2¹³ = 137430255059 is a prime.

It is a super-2 number, since 2×137430263251² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 137430263251.

It is not an unprimeable number, because it can be changed into a prime (137430263221) 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, 2987614396 + ... + 2987614441.

It is an arithmetic number, because the mean of its divisors is an integer number (35851373028).

Almost surely, 2^137430263251 is an apocalyptic number.

137430263251 is a deficient number, since it is larger than the sum of its proper divisors (5975228861).

137430263251 is an equidigital number, since it uses as much as digits as its factorization.

137430263251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5975228860.

The product of its (nonzero) digits is 90720, while the sum is 37.

Adding to 137430263251 its reverse (152362034731), we get a palindrome (289792297982).

The spelling of 137430263251 in words is "one hundred thirty-seven billion, four hundred thirty million, two hundred sixty-three thousand, two hundred fifty-one".