20573104497 has 12 divisors (see below), whose sum is σ = 30151217040. Its totient is φ = 12468547960.

The previous prime is 20573104493. The next prime is 20573104511. The reversal of 20573104497 is 79440137502.

It is not a de Polignac number, because 20573104497 - 2² = 20573104493 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20573104493) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28337247 + ... + 28337972.

It is an arithmetic number, because the mean of its divisors is an integer number (2512601420).

Almost surely, 2^20573104497 is an apocalyptic number.

It is an amenable number.

20573104497 is a deficient number, since it is larger than the sum of its proper divisors (9578112543).

20573104497 is a wasteful number, since it uses less digits than its factorization.

20573104497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56675244 (or 56675233 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 42.

The spelling of 20573104497 in words is "twenty billion, five hundred seventy-three million, one hundred four thousand, four hundred ninety-seven".