20135741402531 has 2 divisors, whose sum is σ = 20135741402532. Its totient is φ = 20135741402530.

The previous prime is 20135741402503. The next prime is 20135741402549. The reversal of 20135741402531 is 13520414753102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20135741402531 - 2²² = 20135737208227 is a prime.

It is a super-2 number, since 2×20135741402531² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20135741432531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10067870701265 + 10067870701266.

It is an arithmetic number, because the mean of its divisors is an integer number (10067870701266).

Almost surely, 2^{20135741402531} is an apocalyptic number.

20135741402531 is a deficient number, since it is larger than the sum of its proper divisors (1).

20135741402531 is an equidigital number, since it uses as much as digits as its factorization.

20135741402531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100800, while the sum is 38.

The spelling of 20135741402531 in words is "twenty trillion, one hundred thirty-five billion, seven hundred forty-one million, four hundred two thousand, five hundred thirty-one".