20677017445531 has 2 divisors, whose sum is σ = 20677017445532. Its totient is φ = 20677017445530.

The previous prime is 20677017445507. The next prime is 20677017445541. The reversal of 20677017445531 is 13554471077602.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20677017445531 - 2⁵ = 20677017445499 is a prime.

It is a super-2 number, since 2×20677017445531² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20677017445541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10338508722765 + 10338508722766.

It is an arithmetic number, because the mean of its divisors is an integer number (10338508722766).

Almost surely, 2^{20677017445531} is an apocalyptic number.

20677017445531 is a deficient number, since it is larger than the sum of its proper divisors (1).

20677017445531 is an equidigital number, since it uses as much as digits as its factorization.

20677017445531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4939200, while the sum is 52.

The spelling of 20677017445531 in words is "twenty trillion, six hundred seventy-seven billion, seventeen million, four hundred forty-five thousand, five hundred thirty-one".