71601501431 has 2 divisors, whose sum is σ = 71601501432. Its totient is φ = 71601501430.

The previous prime is 71601501427. The next prime is 71601501451. The reversal of 71601501431 is 13410510617.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71601501431 - 2² = 71601501427 is a prime.

It is a super-2 number, since 2×71601501431² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71601501394 and 71601501403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71601501451) 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, 35800750715 + 35800750716.

It is an arithmetic number, because the mean of its divisors is an integer number (35800750716).

Almost surely, 2^71601501431 is an apocalyptic number.

71601501431 is a deficient number, since it is larger than the sum of its proper divisors (1).

71601501431 is an equidigital number, since it uses as much as digits as its factorization.

71601501431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 29.

The spelling of 71601501431 in words is "seventy-one billion, six hundred one million, five hundred one thousand, four hundred thirty-one".