979549774660 has 96 divisors (see below), whose sum is σ = 2232774294912. Its totient is φ = 359592929280.

The previous prime is 979549774639. The next prime is 979549774663. The reversal of 979549774660 is 66477945979.

It is a super-2 number, since 2×979549774660² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (979549774663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2770515 + ... + 3104005.

It is an arithmetic number, because the mean of its divisors is an integer number (23258065572).

Almost surely, 2^979549774660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 979549774660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1116387147456).

979549774660 is an abundant number, since it is smaller than the sum of its proper divisors (1253224520252).

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

979549774660 is a wasteful number, since it uses less digits than its factorization.

979549774660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333733 (or 333731 counting only the distinct ones).

The product of its (nonzero) digits is 720135360, while the sum is 73.

The spelling of 979549774660 in words is "nine hundred seventy-nine billion, five hundred forty-nine million, seven hundred seventy-four thousand, six hundred sixty".