16046881531 has 2 divisors, whose sum is σ = 16046881532. Its totient is φ = 16046881530.

The previous prime is 16046881453. The next prime is 16046881541. The reversal of 16046881531 is 13518864061.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16046881531 is a prime.

It is a super-2 number, since 2×16046881531² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16046881541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8023440765 + 8023440766.

It is an arithmetic number, because the mean of its divisors is an integer number (8023440766).

Almost surely, 2^16046881531 is an apocalyptic number.

16046881531 is a deficient number, since it is larger than the sum of its proper divisors (1).

16046881531 is an equidigital number, since it uses as much as digits as its factorization.

16046881531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 16046881531 in words is "sixteen billion, forty-six million, eight hundred eighty-one thousand, five hundred thirty-one".