987629591650 has 48 divisors (see below), whose sum is σ = 1979142576768. Its totient is φ = 364507560000.

The previous prime is 987629591639. The next prime is 987629591671. The reversal of 987629591650 is 56195926789.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1205005 + ... + 1851295.

It is an arithmetic number, because the mean of its divisors is an integer number (41232137016).

Almost surely, 2^987629591650 is an apocalyptic number.

987629591650 is an abundant number, since it is smaller than the sum of its proper divisors (991512985118).

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

987629591650 is a wasteful number, since it uses less digits than its factorization.

987629591650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648667 (or 648662 counting only the distinct ones).

The product of its (nonzero) digits is 73483200, while the sum is 67.

The spelling of 987629591650 in words is "nine hundred eighty-seven billion, six hundred twenty-nine million, five hundred ninety-one thousand, six hundred fifty".