20475457402 has 8 divisors (see below), whose sum is σ = 30716522496. Its totient is φ = 10236616572.

The previous prime is 20475457399. The next prime is 20475457421.

20475457402 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20475457402² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 532858 + ... + 569989.

It is an arithmetic number, because the mean of its divisors is an integer number (3839565312).

Almost surely, 2^20475457402 is an apocalyptic number.

20475457402 is a deficient number, since it is larger than the sum of its proper divisors (10241065094).

20475457402 is a wasteful number, since it uses less digits than its factorization.

20475457402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112132.

The product of its (nonzero) digits is 313600, while the sum is 40.

The spelling of 20475457402 in words is "twenty billion, four hundred seventy-five million, four hundred fifty-seven thousand, four hundred two".