20695696320 has 112 divisors (see below), whose sum is σ = 70763404320. Its totient is φ = 5094322176.

The previous prime is 20695696319. The next prime is 20695696369. The reversal of 20695696320 is 2369659602.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 20695696320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 816675 + ... + 841634.

It is an arithmetic number, because the mean of its divisors is an integer number (631816110).

Almost surely, 2^20695696320 is an apocalyptic number.

20695696320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20695696320 is an abundant number, since it is smaller than the sum of its proper divisors (50067708000).

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

20695696320 is a wasteful number, since it uses less digits than its factorization.

20695696320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1658342 (or 1658332 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 48.

The spelling of 20695696320 in words is "twenty billion, six hundred ninety-five million, six hundred ninety-six thousand, three hundred twenty".