20951907824378 has 32 divisors (see below), whose sum is σ = 32572870666560. Its totient is φ = 10100992429440.

The previous prime is 20951907824209. The next prime is 20951907824413. The reversal of 20951907824378 is 87342870915902.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1986125 + ... + 6771152.

It is an arithmetic number, because the mean of its divisors is an integer number (1017902208330).

Almost surely, 2^{20951907824378} is an apocalyptic number.

20951907824378 is a deficient number, since it is larger than the sum of its proper divisors (11620962842182).

20951907824378 is a wasteful number, since it uses less digits than its factorization.

20951907824378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8757662.

The product of its (nonzero) digits is 60963840, while the sum is 65.

The spelling of 20951907824378 in words is "twenty trillion, nine hundred fifty-one billion, nine hundred seven million, eight hundred twenty-four thousand, three hundred seventy-eight".