128937057394 has 8 divisors (see below), whose sum is σ = 193415736240. Its totient is φ = 64465145316.

The previous prime is 128937057349. The next prime is 128937057401. The reversal of 128937057394 is 493750739821.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1643784 + ... + 1720435.

It is an arithmetic number, because the mean of its divisors is an integer number (24176967030).

Almost surely, 2^128937057394 is an apocalyptic number.

128937057394 is a deficient number, since it is larger than the sum of its proper divisors (64478678846).

128937057394 is a wasteful number, since it uses less digits than its factorization.

128937057394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3383384.

The product of its (nonzero) digits is 11430720, while the sum is 58.

The spelling of 128937057394 in words is "one hundred twenty-eight billion, nine hundred thirty-seven million, fifty-seven thousand, three hundred ninety-four".