979105143240 has 96 divisors (see below), whose sum is σ = 3636676255680. Its totient is φ = 223795460736.

The previous prime is 979105143169. The next prime is 979105143241. The reversal of 979105143240 is 42341501979.

979105143240 is a `hidden beast` number, since 9 + 7 + 91 + 0 + 514 + 3 + 2 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (979105143241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 194264374 + ... + 194269413.

It is an arithmetic number, because the mean of its divisors is an integer number (37882044330).

Almost surely, 2^979105143240 is an apocalyptic number.

979105143240 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

979105143240 is an abundant number, since it is smaller than the sum of its proper divisors (2657571112440).

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

979105143240 is a wasteful number, since it uses less digits than its factorization.

979105143240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388533811 (or 388533804 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 979105143240 in words is "nine hundred seventy-nine billion, one hundred five million, one hundred forty-three thousand, two hundred forty".