20791929070 has 16 divisors (see below), whose sum is σ = 40827788208. Its totient is φ = 7560701440.

The previous prime is 20791929047. The next prime is 20791929077. The reversal of 20791929070 is 7092919702.

It is a super-2 number, since 2×20791929070² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20791929070.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20791929077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94508659 + ... + 94508878.

It is an arithmetic number, because the mean of its divisors is an integer number (2551736763).

Almost surely, 2^20791929070 is an apocalyptic number.

20791929070 is a deficient number, since it is larger than the sum of its proper divisors (20035859138).

20791929070 is a wasteful number, since it uses less digits than its factorization.

20791929070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189017555.

The product of its (nonzero) digits is 142884, while the sum is 46.

The spelling of 20791929070 in words is "twenty billion, seven hundred ninety-one million, nine hundred twenty-nine thousand, seventy".