21040628976339 has 96 divisors (see below), whose sum is σ = 34120764378624. Its totient is φ = 11294945925120.

The previous prime is 21040628976319. The next prime is 21040628976371. The reversal of 21040628976339 is 93367982604012.

It is not a de Polignac number, because 21040628976339 - 2¹¹ = 21040628974291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21040628976319) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 141087537 + ... + 141236589.

It is an arithmetic number, because the mean of its divisors is an integer number (355424628944).

Almost surely, 2^{21040628976339} is an apocalyptic number.

21040628976339 is a deficient number, since it is larger than the sum of its proper divisors (13080135402285).

21040628976339 is a wasteful number, since it uses less digits than its factorization.

21040628976339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149337 (or 149314 counting only the distinct ones).

The product of its (nonzero) digits is 23514624, while the sum is 60.

The spelling of 21040628976339 in words is "twenty-one trillion, forty billion, six hundred twenty-eight million, nine hundred seventy-six thousand, three hundred thirty-nine".