87381367020 has 144 divisors (see below), whose sum is σ = 268035575808. Its totient is φ = 23041065600.

The previous prime is 87381367019. The next prime is 87381367027. The reversal of 87381367020 is 2076318378.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (87381367027) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7011795 + ... + 7024245.

Almost surely, 2^87381367020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87381367020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134017787904).

87381367020 is an abundant number, since it is smaller than the sum of its proper divisors (180654208788).

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

87381367020 is a wasteful number, since it uses less digits than its factorization.

87381367020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12900 (or 12895 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 87381367020 in words is "eighty-seven billion, three hundred eighty-one million, three hundred sixty-seven thousand, twenty".