128635951037 has 4 divisors (see below), whose sum is σ = 140330128416. Its totient is φ = 116941773660.

The previous prime is 128635951019. The next prime is 128635951043. The reversal of 128635951037 is 730159536821.

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 128635951037 - 2³⁶ = 59916474301 is a prime.

It is a super-2 number, since 2×128635951037² (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 (128635951007) 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, 5847088673 + ... + 5847088694.

It is an arithmetic number, because the mean of its divisors is an integer number (35082532104).

Almost surely, 2^128635951037 is an apocalyptic number.

It is an amenable number.

128635951037 is a deficient number, since it is larger than the sum of its proper divisors (11694177379).

128635951037 is a wasteful number, since it uses less digits than its factorization.

128635951037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11694177378.

The product of its (nonzero) digits is 1360800, while the sum is 50.

The spelling of 128635951037 in words is "one hundred twenty-eight billion, six hundred thirty-five million, nine hundred fifty-one thousand, thirty-seven".