16415694145 has 8 divisors (see below), whose sum is σ = 19842620904. Its totient is φ = 13036696704.

The previous prime is 16415694131. The next prime is 16415694161. The reversal of 16415694145 is 54149651461.

It can be written as a sum of positive squares in 4 ways, for example, as 4551256369 + 11864437776 = 67463^2 + 108924^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16415694145 - 2⁹ = 16415693633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16415694095 and 16415694104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11981574 + ... + 11982943.

It is an arithmetic number, because the mean of its divisors is an integer number (2480327613).

Almost surely, 2^16415694145 is an apocalyptic number.

It is an amenable number.

16415694145 is a deficient number, since it is larger than the sum of its proper divisors (3426926759).

16415694145 is a wasteful number, since it uses less digits than its factorization.

16415694145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23964659.

The product of its digits is 518400, while the sum is 46.

The spelling of 16415694145 in words is "sixteen billion, four hundred fifteen million, six hundred ninety-four thousand, one hundred forty-five".