16612917494 has 4 divisors (see below), whose sum is σ = 24919376244. Its totient is φ = 8306458746.

The previous prime is 16612917493. The next prime is 16612917499. The reversal of 16612917494 is 49471921661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49471921661 = 73 ⋅677697557.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16612917493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4153229372 + ... + 4153229375.

It is an arithmetic number, because the mean of its divisors is an integer number (6229844061).

Almost surely, 2^16612917494 is an apocalyptic number.

16612917494 is a deficient number, since it is larger than the sum of its proper divisors (8306458750).

16612917494 is an equidigital number, since it uses as much as digits as its factorization.

16612917494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8306458749.

The product of its digits is 653184, while the sum is 50.

The spelling of 16612917494 in words is "sixteen billion, six hundred twelve million, nine hundred seventeen thousand, four hundred ninety-four".