99987486380 has 48 divisors (see below), whose sum is σ = 215385839424. Its totient is φ = 38966753280.

The previous prime is 99987486359. The next prime is 99987486427. The reversal of 99987486380 is 8368478999.

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, 527204 + ... + 691316.

It is an arithmetic number, because the mean of its divisors is an integer number (4487204988).

Almost surely, 2^99987486380 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 99987486380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107692919712).

99987486380 is an abundant number, since it is smaller than the sum of its proper divisors (115398353044).

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

99987486380 is a wasteful number, since it uses less digits than its factorization.

99987486380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164906 (or 164904 counting only the distinct ones).

The product of its (nonzero) digits is 188116992, while the sum is 71.

The spelling of 99987486380 in words is "ninety-nine billion, nine hundred eighty-seven million, four hundred eighty-six thousand, three hundred eighty".