87987451392 has 400 divisors, whose sum is σ = 274055562000. Its totient is φ = 28070461440.

The previous prime is 87987451379. The next prime is 87987451393. The reversal of 87987451392 is 29315478978.

87987451392 is a `hidden beast` number, since 8 + 7 + 98 + 7 + 451 + 3 + 92 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87987451393) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 179200267 + ... + 179200757.

It is an arithmetic number, because the mean of its divisors is an integer number (685138905).

Almost surely, 2^87987451392 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 87987451392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137027781000).

87987451392 is an abundant number, since it is smaller than the sum of its proper divisors (186068110608).

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

87987451392 is a wasteful number, since it uses less digits than its factorization.

87987451392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699 (or 674 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 63.

The spelling of 87987451392 in words is "eighty-seven billion, nine hundred eighty-seven million, four hundred fifty-one thousand, three hundred ninety-two".