20415053475 has 72 divisors (see below), whose sum is σ = 36845058432. Its totient is φ = 10805184000.

The previous prime is 20415053473. The next prime is 20415053539. The reversal of 20415053475 is 57435051402.

20415053475 is a `hidden beast` number, since 2 + 0 + 4 + 1 + 50 + 534 + 75 = 666.

It is not a de Polignac number, because 20415053475 - 2¹ = 20415053473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20415053473) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 30154837 + ... + 30155513.

Almost surely, 2^20415053475 is an apocalyptic number.

20415053475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20415053475 is a deficient number, since it is larger than the sum of its proper divisors (16430004957).

20415053475 is a wasteful number, since it uses less digits than its factorization.

20415053475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1517 (or 1509 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 36.

The spelling of 20415053475 in words is "twenty billion, four hundred fifteen million, fifty-three thousand, four hundred seventy-five".