18101151012 has 48 divisors (see below), whose sum is σ = 48617031680. Its totient is φ = 5134547232.

The previous prime is 18101150987. The next prime is 18101151023. The reversal of 18101151012 is 21015110181.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 18101151012.

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, 763468 + ... + 786819.

Almost surely, 2^18101151012 is an apocalyptic number.

18101151012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18101151012 is an abundant number, since it is smaller than the sum of its proper divisors (30515880668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18101151012 is a wasteful number, since it uses less digits than its factorization.

18101151012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1550440 (or 1550438 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 21.

Adding to 18101151012 its reverse (21015110181), we get a palindrome (39116261193).

The spelling of 18101151012 in words is "eighteen billion, one hundred one million, one hundred fifty-one thousand, twelve".