20696890412 has 12 divisors (see below), whose sum is σ = 39512245416. Its totient is φ = 9407677440.

The previous prime is 20696890411. The next prime is 20696890447. The reversal of 20696890412 is 21409869602.

It is a super-2 number, since 2×20696890412² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20696890411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235191893 + ... + 235191980.

It is an arithmetic number, because the mean of its divisors is an integer number (3292687118).

Almost surely, 2^20696890412 is an apocalyptic number.

20696890412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20696890412 is a deficient number, since it is larger than the sum of its proper divisors (18815355004).

20696890412 is a wasteful number, since it uses less digits than its factorization.

20696890412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470383888 (or 470383886 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 47.

The spelling of 20696890412 in words is "twenty billion, six hundred ninety-six million, eight hundred ninety thousand, four hundred twelve".