20755494131 has 2 divisors, whose sum is σ = 20755494132. Its totient is φ = 20755494130.

The previous prime is 20755494121. The next prime is 20755494163. The reversal of 20755494131 is 13149455702.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20755494131 is a prime.

It is a super-2 number, since 2×20755494131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20755494121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10377747065 + 10377747066.

It is an arithmetic number, because the mean of its divisors is an integer number (10377747066).

Almost surely, 2^20755494131 is an apocalyptic number.

20755494131 is a deficient number, since it is larger than the sum of its proper divisors (1).

20755494131 is an equidigital number, since it uses as much as digits as its factorization.

20755494131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 41.

The spelling of 20755494131 in words is "twenty billion, seven hundred fifty-five million, four hundred ninety-four thousand, one hundred thirty-one".