279312699480 has 128 divisors (see below), whose sum is σ = 865319086080. Its totient is φ = 72051471360.

The previous prime is 279312699469. The next prime is 279312699539. The reversal of 279312699480 is 84996213972.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10056172 + ... + 10083908.

It is an arithmetic number, because the mean of its divisors is an integer number (6760305360).

Almost surely, 2^279312699480 is an apocalyptic number.

279312699480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 279312699480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (432659543040).

279312699480 is an abundant number, since it is smaller than the sum of its proper divisors (586006386600).

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

279312699480 is a wasteful number, since it uses less digits than its factorization.

279312699480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30489 (or 30485 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 60.

The spelling of 279312699480 in words is "two hundred seventy-nine billion, three hundred twelve million, six hundred ninety-nine thousand, four hundred eighty".