16490613145 has 16 divisors (see below), whose sum is σ = 19872545040. Its totient is φ = 13136707584.

The previous prime is 16490613109. The next prime is 16490613149. The reversal of 16490613145 is 54131609461.

It can be written as a sum of positive squares in 8 ways, for example, as 3878424729 + 12612188416 = 62277^2 + 112304^2 .

It is a cyclic number.

It is not a de Polignac number, because 16490613145 - 2²³ = 16482224537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16490613098 and 16490613107.

It is not an unprimeable number, because it can be changed into a prime (16490613149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1668057 + ... + 1677913.

It is an arithmetic number, because the mean of its divisors is an integer number (1242034065).

Almost surely, 2^16490613145 is an apocalyptic number.

It is an amenable number.

16490613145 is a deficient number, since it is larger than the sum of its proper divisors (3381931895).

16490613145 is a wasteful number, since it uses less digits than its factorization.

16490613145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11244.

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 16490613145 in words is "sixteen billion, four hundred ninety million, six hundred thirteen thousand, one hundred forty-five".