20534540451 has 8 divisors (see below), whose sum is σ = 27635269824. Its totient is φ = 13561752360.

The previous prime is 20534540413. The next prime is 20534540489. The reversal of 20534540451 is 15404543502.

It is an interprime number because it is at equal distance from previous prime (20534540413) and next prime (20534540489).

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

It is not a de Polignac number, because 20534540451 - 2⁶ = 20534540387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20534540251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31984945 + ... + 31985586.

It is an arithmetic number, because the mean of its divisors is an integer number (3454408728).

Almost surely, 2^20534540451 is an apocalyptic number.

20534540451 is a deficient number, since it is larger than the sum of its proper divisors (7100729373).

20534540451 is a wasteful number, since it uses less digits than its factorization.

20534540451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63970641.

The product of its (nonzero) digits is 48000, while the sum is 33.

The spelling of 20534540451 in words is "twenty billion, five hundred thirty-four million, five hundred forty thousand, four hundred fifty-one".