16550570431 has 2 divisors, whose sum is σ = 16550570432. Its totient is φ = 16550570430.

The previous prime is 16550570419. The next prime is 16550570461. The reversal of 16550570431 is 13407505561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16550570431 - 2²⁷ = 16416352703 is a prime.

It is a super-2 number, since 2×16550570431² (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 (16550570411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8275285215 + 8275285216.

It is an arithmetic number, because the mean of its divisors is an integer number (8275285216).

Almost surely, 2^16550570431 is an apocalyptic number.

16550570431 is a deficient number, since it is larger than the sum of its proper divisors (1).

16550570431 is an equidigital number, since it uses as much as digits as its factorization.

16550570431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63000, while the sum is 37.

The spelling of 16550570431 in words is "sixteen billion, five hundred fifty million, five hundred seventy thousand, four hundred thirty-one".