20212251796836 has 72 divisors (see below), whose sum is σ = 55752489059904. Its totient is φ = 6123202424640.

The previous prime is 20212251796813. The next prime is 20212251796853. The reversal of 20212251796836 is 63869715221202.

20212251796836 is a `hidden beast` number, since 2 + 0 + 2 + 1 + 2 + 2 + 517 + 96 + 8 + 36 = 666.

It is a super-2 number, since 2×20212251796836² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5766160 + ... + 8583303.

It is an arithmetic number, because the mean of its divisors is an integer number (774340125832).

Almost surely, 2^{20212251796836} is an apocalyptic number.

It is an amenable number.

20212251796836 is an abundant number, since it is smaller than the sum of its proper divisors (35540237263068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20212251796836 is a wasteful number, since it uses less digits than its factorization.

20212251796836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14353041 (or 14353036 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 20212251796836 in words is "twenty trillion, two hundred twelve billion, two hundred fifty-one million, seven hundred ninety-six thousand, eight hundred thirty-six".