999764229380 has 72 divisors (see below), whose sum is σ = 2446747365888. Its totient is φ = 342149476032.

The previous prime is 999764229353. The next prime is 999764229433. The reversal of 999764229380 is 83922467999.

999764229380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 999764229380.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 396452 + ... + 1468571.

It is an arithmetic number, because the mean of its divisors is an integer number (33982602304).

Almost surely, 2^999764229380 is an apocalyptic number.

It is an amenable number.

999764229380 is an abundant number, since it is smaller than the sum of its proper divisors (1446983136508).

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

999764229380 is a wasteful number, since it uses less digits than its factorization.

999764229380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1865593 (or 1865584 counting only the distinct ones).

The product of its (nonzero) digits is 105815808, while the sum is 68.

The spelling of 999764229380 in words is "nine hundred ninety-nine billion, seven hundred sixty-four million, two hundred twenty-nine thousand, three hundred eighty".