16780296431 has 2 divisors, whose sum is σ = 16780296432. Its totient is φ = 16780296430.

The previous prime is 16780296427. The next prime is 16780296493. The reversal of 16780296431 is 13469208761.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16780296431 - 2² = 16780296427 is a prime.

It is a super-2 number, since 2×16780296431² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16780206431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8390148215 + 8390148216.

It is an arithmetic number, because the mean of its divisors is an integer number (8390148216).

Almost surely, 2^16780296431 is an apocalyptic number.

16780296431 is a deficient number, since it is larger than the sum of its proper divisors (1).

16780296431 is an equidigital number, since it uses as much as digits as its factorization.

16780296431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 16780296431 in words is "sixteen billion, seven hundred eighty million, two hundred ninety-six thousand, four hundred thirty-one".