1381674034656 has 72 divisors (see below), whose sum is σ = 3929550894360. Its totient is φ = 460509325056.

The previous prime is 1381674034651. The next prime is 1381674034667. The reversal of 1381674034656 is 6564304761831.

1381674034656 is a `hidden beast` number, since 1 + 3 + 81 + 67 + 40 + 3 + 465 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381674034651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2528430 + ... + 3025938.

It is an arithmetic number, because the mean of its divisors is an integer number (54577095755).

Almost surely, 2^{1381674034656} is an apocalyptic number.

1381674034656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1381674034656 is an abundant number, since it is smaller than the sum of its proper divisors (2547876859704).

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

1381674034656 is a wasteful number, since it uses less digits than its factorization.

1381674034656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507168 (or 507157 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 1381674034656 in words is "one trillion, three hundred eighty-one billion, six hundred seventy-four million, thirty-four thousand, six hundred fifty-six".