20791970862278 has 32 divisors (see below), whose sum is σ = 38892072630528. Its totient is φ = 8099020605600.

The previous prime is 20791970862227. The next prime is 20791970862281. The reversal of 20791970862278 is 87226807919702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13844108 + ... + 15272303.

It is an arithmetic number, because the mean of its divisors is an integer number (1215377269704).

Almost surely, 2^{20791970862278} is an apocalyptic number.

20791970862278 is a deficient number, since it is larger than the sum of its proper divisors (18100101768250).

20791970862278 is a wasteful number, since it uses less digits than its factorization.

20791970862278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29121068.

The product of its (nonzero) digits is 85349376, while the sum is 68.

The spelling of 20791970862278 in words is "twenty trillion, seven hundred ninety-one billion, nine hundred seventy million, eight hundred sixty-two thousand, two hundred seventy-eight".