20412403651 has 4 divisors (see below), whose sum is σ = 20412857304. Its totient is φ = 20411950000.

The previous prime is 20412403601. The next prime is 20412403679. The reversal of 20412403651 is 15630421402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20412403651 is a prime.

It is a super-2 number, since 2×20412403651² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20412403601) 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, 150850 + ... + 252151.

It is an arithmetic number, because the mean of its divisors is an integer number (5103214326).

Almost surely, 2^20412403651 is an apocalyptic number.

20412403651 is a deficient number, since it is larger than the sum of its proper divisors (453653).

20412403651 is an equidigital number, since it uses as much as digits as its factorization.

20412403651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453652.

The product of its (nonzero) digits is 5760, while the sum is 28.

The spelling of 20412403651 in words is "twenty billion, four hundred twelve million, four hundred three thousand, six hundred fifty-one".