18906913064651 has 8 divisors (see below), whose sum is σ = 19309622587920. Its totient is φ = 18505906330912.

The previous prime is 18906913064639. The next prime is 18906913064657. The reversal of 18906913064651 is 15646031960981.

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 18906913064651 - 2¹⁰ = 18906913063627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18906913064657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 425674940 + ... + 425719353.

It is an arithmetic number, because the mean of its divisors is an integer number (2413702823490).

Almost surely, 2^{18906913064651} is an apocalyptic number.

18906913064651 is a deficient number, since it is larger than the sum of its proper divisors (402709523269).

18906913064651 is an equidigital number, since it uses as much as digits as its factorization.

18906913064651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851394765.

The product of its (nonzero) digits is 8398080, while the sum is 59.

The spelling of 18906913064651 in words is "eighteen trillion, nine hundred six billion, nine hundred thirteen million, sixty-four thousand, six hundred fifty-one".