20639934998962 has 8 divisors (see below), whose sum is σ = 30964755927600. Its totient is φ = 10318349689764.

The previous prime is 20639934998923. The next prime is 20639934998983. The reversal of 20639934998962 is 26989943993602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20639934998962² (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 3 ways as a sum of consecutive naturals, for example, 808888912 + ... + 808914427.

It is an arithmetic number, because the mean of its divisors is an integer number (3870594490950).

Almost surely, 2^{20639934998962} is an apocalyptic number.

20639934998962 is a deficient number, since it is larger than the sum of its proper divisors (10324820928638).

20639934998962 is a wasteful number, since it uses less digits than its factorization.

20639934998962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617809720.

The product of its (nonzero) digits is 2448880128, while the sum is 79.

The spelling of 20639934998962 in words is "twenty trillion, six hundred thirty-nine billion, nine hundred thirty-four million, nine hundred ninety-eight thousand, nine hundred sixty-two".