961545289920 has 112 divisors (see below), whose sum is σ = 3053331610368. Its totient is φ = 256376355840.

The previous prime is 961545289847. The next prime is 961545289937. The reversal of 961545289920 is 29982545169.

It is a Harshad number since it is a multiple of its sum of digits (60).

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, 7221387 + ... + 7353333.

Almost surely, 2^961545289920 is an apocalyptic number.

It is an amenable number.

961545289920 is an abundant number, since it is smaller than the sum of its proper divisors (2091786320448).

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

961545289920 is a wasteful number, since it uses less digits than its factorization.

961545289920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139558 (or 139548 counting only the distinct ones).

The product of its (nonzero) digits is 13996800, while the sum is 60.

The spelling of 961545289920 in words is "nine hundred sixty-one billion, five hundred forty-five million, two hundred eighty-nine thousand, nine hundred twenty".