87420887012 has 48 divisors (see below), whose sum is σ = 160863521280. Its totient is φ = 41517245952.

The previous prime is 87420887011. The next prime is 87420887027. The reversal of 87420887012 is 21078802478.

It is a super-2 number, since 2×87420887012² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87420887011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19656173 + ... + 19660619.

It is an arithmetic number, because the mean of its divisors is an integer number (3351323360).

Almost surely, 2^87420887012 is an apocalyptic number.

It is an amenable number.

87420887012 is a deficient number, since it is larger than the sum of its proper divisors (73442634268).

87420887012 is a wasteful number, since it uses less digits than its factorization.

87420887012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7620 (or 7618 counting only the distinct ones).

The product of its (nonzero) digits is 401408, while the sum is 47.

The spelling of 87420887012 in words is "eighty-seven billion, four hundred twenty million, eight hundred eighty-seven thousand, twelve".