1399630815220 has 72 divisors (see below), whose sum is σ = 3231004873824. Its totient is φ = 508911480000.

The previous prime is 1399630815197. The next prime is 1399630815239. The reversal of 1399630815220 is 225180369931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40374895 + ... + 40409545.

It is an arithmetic number, because the mean of its divisors is an integer number (44875067692).

Almost surely, 2^{1399630815220} is an apocalyptic number.

1399630815220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1399630815220 is an abundant number, since it is smaller than the sum of its proper divisors (1831374058604).

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

1399630815220 is a wasteful number, since it uses less digits than its factorization.

1399630815220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51373 (or 51360 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 49.

The spelling of 1399630815220 in words is "one trillion, three hundred ninety-nine billion, six hundred thirty million, eight hundred fifteen thousand, two hundred twenty".