21929282399516 has 24 divisors (see below), whose sum is σ = 40006407262080. Its totient is φ = 10505884248000.

The previous prime is 21929282399509. The next prime is 21929282399533. The reversal of 21929282399516 is 61599328292912.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 875477831 + ... + 875502878.

It is an arithmetic number, because the mean of its divisors is an integer number (1666933635920).

Almost surely, 2^{21929282399516} is an apocalyptic number.

It is an amenable number.

21929282399516 is a deficient number, since it is larger than the sum of its proper divisors (18077124862564).

21929282399516 is a wasteful number, since it uses less digits than its factorization.

21929282399516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1750980845 (or 1750980843 counting only the distinct ones).

The product of its digits is 75582720, while the sum is 68.

The spelling of 21929282399516 in words is "twenty-one trillion, nine hundred twenty-nine billion, two hundred eighty-two million, three hundred ninety-nine thousand, five hundred sixteen".