71151717631 has 2 divisors, whose sum is σ = 71151717632. Its totient is φ = 71151717630.

The previous prime is 71151717619. The next prime is 71151717641. The reversal of 71151717631 is 13671715117.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71151717631 - 2²⁹ = 70614846719 is a prime.

It is a super-2 number, since 2×71151717631² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71151717641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35575858815 + 35575858816.

It is an arithmetic number, because the mean of its divisors is an integer number (35575858816).

Almost surely, 2^71151717631 is an apocalyptic number.

71151717631 is a deficient number, since it is larger than the sum of its proper divisors (1).

71151717631 is an equidigital number, since it uses as much as digits as its factorization.

71151717631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30870, while the sum is 40.

The spelling of 71151717631 in words is "seventy-one billion, one hundred fifty-one million, seven hundred seventeen thousand, six hundred thirty-one".