279002672640 has 400 divisors, whose sum is σ = 1058095103472. Its totient is φ = 70023315456.

The previous prime is 279002672639. The next prime is 279002672651. The reversal of 279002672640 is 46276200972.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3485547 + ... + 3564693.

Almost surely, 2^279002672640 is an apocalyptic number.

279002672640 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 279002672640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (529047551736).

279002672640 is an abundant number, since it is smaller than the sum of its proper divisors (779092430832).

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

279002672640 is an equidigital number, since it uses as much as digits as its factorization.

279002672640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79199 (or 79174 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The spelling of 279002672640 in words is "two hundred seventy-nine billion, two million, six hundred seventy-two thousand, six hundred forty".