20877442451431 has 8 divisors (see below), whose sum is σ = 20882029332528. Its totient is φ = 20872855968000.

The previous prime is 20877442451417. The next prime is 20877442451483. The reversal of 20877442451431 is 13415424477802.

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

It is a cyclic number.

It is not a de Polignac number, because 20877442451431 - 2¹⁷ = 20877442320359 is a prime.

It is a super-2 number, since 2×20877442451431² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20877442454431) 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, 120577701 + ... + 120750721.

It is an arithmetic number, because the mean of its divisors is an integer number (2610253666566).

Almost surely, 2^{20877442451431} is an apocalyptic number.

20877442451431 is a deficient number, since it is larger than the sum of its proper divisors (4586881097).

20877442451431 is a wasteful number, since it uses less digits than its factorization.

20877442451431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198833.

The product of its (nonzero) digits is 6021120, while the sum is 52.

The spelling of 20877442451431 in words is "twenty trillion, eight hundred seventy-seven billion, four hundred forty-two million, four hundred fifty-one thousand, four hundred thirty-one".