123537715037 has 4 divisors (see below), whose sum is σ = 134768416416. Its totient is φ = 112307013660.

The previous prime is 123537715009. The next prime is 123537715051. The reversal of 123537715037 is 730517735321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123537715037 - 2¹⁴ = 123537698653 is a prime.

It is a super-2 number, since 2×123537715037² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123537715337) 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, 5615350673 + ... + 5615350694.

It is an arithmetic number, because the mean of its divisors is an integer number (33692104104).

Almost surely, 2^123537715037 is an apocalyptic number.

It is an amenable number.

123537715037 is a deficient number, since it is larger than the sum of its proper divisors (11230701379).

123537715037 is a wasteful number, since it uses less digits than its factorization.

123537715037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11230701378.

The product of its (nonzero) digits is 463050, while the sum is 44.

The spelling of 123537715037 in words is "one hundred twenty-three billion, five hundred thirty-seven million, seven hundred fifteen thousand, thirty-seven".