20514953473 has 16 divisors (see below), whose sum is σ = 24879204864. Its totient is φ = 16513620480.

The previous prime is 20514953453. The next prime is 20514953489. The reversal of 20514953473 is 37435941502.

It is not a de Polignac number, because 20514953473 - 2⁹ = 20514952961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20514953413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134233 + ... + 242998.

It is an arithmetic number, because the mean of its divisors is an integer number (1554950304).

Almost surely, 2^20514953473 is an apocalyptic number.

It is an amenable number.

20514953473 is a deficient number, since it is larger than the sum of its proper divisors (4364251391).

20514953473 is a wasteful number, since it uses less digits than its factorization.

20514953473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377712.

The product of its (nonzero) digits is 453600, while the sum is 43.

The spelling of 20514953473 in words is "twenty billion, five hundred fourteen million, nine hundred fifty-three thousand, four hundred seventy-three".