20474026965 has 216 divisors, whose sum is σ = 43941560832. Its totient is φ = 9126613440.

The previous prime is 20474026943. The next prime is 20474027003. The reversal of 20474026965 is 56962047402.

It is not a de Polignac number, because 20474026965 - 2⁹ = 20474026453 is a prime.

It is a super-2 number, since 2×20474026965² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20474026965.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 75549780 + ... + 75550050.

It is an arithmetic number, because the mean of its divisors is an integer number (203433152).

Almost surely, 2^20474026965 is an apocalyptic number.

It is an amenable number.

20474026965 is an abundant number, since it is smaller than the sum of its proper divisors (23467533867).

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

20474026965 is an frugal number, since it uses more digits than its factorization.

20474026965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361 (or 333 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 20474026965 in words is "twenty billion, four hundred seventy-four million, twenty-six thousand, nine hundred sixty-five".