20522621245 has 16 divisors (see below), whose sum is σ = 28719705600. Its totient is φ = 14072653392.

The previous prime is 20522621239. The next prime is 20522621267. The reversal of 20522621245 is 54212622502.

It is not a de Polignac number, because 20522621245 - 2⁷ = 20522621117 is a prime.

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, 5981557 + ... + 5984986.

It is an arithmetic number, because the mean of its divisors is an integer number (1794981600).

Almost surely, 2^20522621245 is an apocalyptic number.

It is an amenable number.

20522621245 is a deficient number, since it is larger than the sum of its proper divisors (8197084355).

20522621245 is an equidigital number, since it uses as much as digits as its factorization.

20522621245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11966569 (or 11966555 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The spelling of 20522621245 in words is "twenty billion, five hundred twenty-two million, six hundred twenty-one thousand, two hundred forty-five".