1378570820220 has 72 divisors (see below), whose sum is σ = 4561816175280. Its totient is φ = 334198986240.

The previous prime is 1378570820173. The next prime is 1378570820239. The reversal of 1378570820220 is 220280758731.

1378570820220 is a `hidden beast` number, since 1 + 3 + 78 + 570 + 8 + 2 + 0 + 2 + 2 + 0 = 666.

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 23 ways as a sum of consecutive naturals, for example, 348121965 + ... + 348125924.

It is an arithmetic number, because the mean of its divisors is an integer number (63358557990).

Almost surely, 2^{1378570820220} is an apocalyptic number.

1378570820220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1378570820220 is an abundant number, since it is smaller than the sum of its proper divisors (3183245355060).

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

1378570820220 is a wasteful number, since it uses less digits than its factorization.

1378570820220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696247915 (or 696247910 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The spelling of 1378570820220 in words is "one trillion, three hundred seventy-eight billion, five hundred seventy million, eight hundred twenty thousand, two hundred twenty".