20950647457762 has 16 divisors (see below), whose sum is σ = 34282947982752. Its totient is φ = 9523002037120.

The previous prime is 20950647457697. The next prime is 20950647457813. The reversal of 20950647457762 is 26775474605902.

It is a junction number, because it is equal to n+sod(n) for n = 20950647457694 and 20950647457703.

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, 20072178 + ... + 21090130.

It is an arithmetic number, because the mean of its divisors is an integer number (2142684248922).

Almost surely, 2^{20950647457762} is an apocalyptic number.

20950647457762 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20950647457762 is a deficient number, since it is larger than the sum of its proper divisors (13332300524990).

20950647457762 is a wasteful number, since it uses less digits than its factorization.

20950647457762 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1953473.

The product of its (nonzero) digits is 177811200, while the sum is 64.

The spelling of 20950647457762 in words is "twenty trillion, nine hundred fifty billion, six hundred forty-seven million, four hundred fifty-seven thousand, seven hundred sixty-two".