1377799743420 has 144 divisors (see below), whose sum is σ = 4330815521760. Its totient is φ = 354138720768.

The previous prime is 1377799743413. The next prime is 1377799743469. The reversal of 1377799743420 is 243479977731.

1377799743420 is a `hidden beast` number, since 1 + 3 + 77 + 79 + 9 + 74 + 3 + 420 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2839314 + ... + 3288966.

It is an arithmetic number, because the mean of its divisors is an integer number (30075107790).

Almost surely, 2^{1377799743420} is an apocalyptic number.

1377799743420 is a gapful number since it is divisible by the number (10) 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 1377799743420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2165407760880).

1377799743420 is an abundant number, since it is smaller than the sum of its proper divisors (2953015778340).

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

1377799743420 is a wasteful number, since it uses less digits than its factorization.

1377799743420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450284 (or 450279 counting only the distinct ones).

The product of its (nonzero) digits is 56010528, while the sum is 63.

The spelling of 1377799743420 in words is "one trillion, three hundred seventy-seven billion, seven hundred ninety-nine million, seven hundred forty-three thousand, four hundred twenty".