18112246651 has 18 divisors (see below), whose sum is σ = 18849265020. Its totient is φ = 17403339240.

The previous prime is 18112246639. The next prime is 18112246657. The reversal of 18112246651 is 15664221181.

It is a de Polignac number, because none of the positive numbers 2^k-18112246651 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18112246651.

It is not an unprimeable number, because it can be changed into a prime (18112246657) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 47789380 + ... + 47789758.

It is an arithmetic number, because the mean of its divisors is an integer number (1047181390).

Almost surely, 2^18112246651 is an apocalyptic number.

18112246651 is a deficient number, since it is larger than the sum of its proper divisors (737018369).

18112246651 is an frugal number, since it uses more digits than its factorization.

18112246651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887 (or 633 counting only the distinct ones).

The product of its digits is 23040, while the sum is 37.

The spelling of 18112246651 in words is "eighteen billion, one hundred twelve million, two hundred forty-six thousand, six hundred fifty-one".