978745539500 has 48 divisors (see below), whose sum is σ = 2137707936000. Its totient is φ = 391474832000.

The previous prime is 978745539487. The next prime is 978745539533. The reversal of 978745539500 is 5935547879.

It is a super-2 number, since 2×978745539500² (a number of 25 digits) contains 22 as substring.

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, 10076165 + ... + 10172835.

It is an arithmetic number, because the mean of its divisors is an integer number (44535582000).

Almost surely, 2^978745539500 is an apocalyptic number.

It is an amenable number.

978745539500 is an abundant number, since it is smaller than the sum of its proper divisors (1158962396500).

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

978745539500 is a wasteful number, since it uses less digits than its factorization.

978745539500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116939 (or 116927 counting only the distinct ones).

The product of its (nonzero) digits is 47628000, while the sum is 62.

The spelling of 978745539500 in words is "nine hundred seventy-eight billion, seven hundred forty-five million, five hundred thirty-nine thousand, five hundred".