18747414247015 has 16 divisors (see below), whose sum is σ = 22585423550976. Its totient is φ = 14938928848800.

The previous prime is 18747414246929. The next prime is 18747414247027. The reversal of 18747414247015 is 51074241474781.

It is a de Polignac number, because none of the positive numbers 2^k-18747414247015 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9043120 + ... + 10921210.

It is an arithmetic number, because the mean of its divisors is an integer number (1411588971936).

Almost surely, 2^{18747414247015} is an apocalyptic number.

18747414247015 is a deficient number, since it is larger than the sum of its proper divisors (3838009303961).

18747414247015 is a wasteful number, since it uses less digits than its factorization.

18747414247015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1885950.

The product of its (nonzero) digits is 7024640, while the sum is 55.

The spelling of 18747414247015 in words is "eighteen trillion, seven hundred forty-seven billion, four hundred fourteen million, two hundred forty-seven thousand, fifteen".