987009907015 has 32 divisors (see below), whose sum is σ = 1369038081024. Its totient is φ = 675132541440.

The previous prime is 987009907007. The next prime is 987009907061. The reversal of 987009907015 is 510709900789.

It is not a de Polignac number, because 987009907015 - 2³ = 987009907007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 988182 + ... + 1717708.

It is an arithmetic number, because the mean of its divisors is an integer number (42782440032).

Almost surely, 2^987009907015 is an apocalyptic number.

987009907015 is a deficient number, since it is larger than the sum of its proper divisors (382028174009).

987009907015 is a wasteful number, since it uses less digits than its factorization.

987009907015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731007.

The product of its (nonzero) digits is 1428840, while the sum is 55.

The spelling of 987009907015 in words is "nine hundred eighty-seven billion, nine million, nine hundred seven thousand, fifteen".