20673212475 has 24 divisors (see below), whose sum is σ = 35665788672. Its totient is φ = 10546333600.

The previous prime is 20673212471. The next prime is 20673212509. The reversal of 20673212475 is 57421237602.

It is not a de Polignac number, because 20673212475 - 2² = 20673212471 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20673212471) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5990511 + ... + 5993960.

It is an arithmetic number, because the mean of its divisors is an integer number (1486074528).

Almost surely, 2^20673212475 is an apocalyptic number.

20673212475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20673212475 is a deficient number, since it is larger than the sum of its proper divisors (14992576197).

20673212475 is a wasteful number, since it uses less digits than its factorization.

20673212475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11984507 (or 11984502 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 39.

The spelling of 20673212475 in words is "twenty billion, six hundred seventy-three million, two hundred twelve thousand, four hundred seventy-five".