1385045256672 has 216 divisors, whose sum is σ = 4998305114712. Its totient is φ = 359751974400.

The previous prime is 1385045256643. The next prime is 1385045256761. The reversal of 1385045256672 is 2766525405831.

1385045256672 is a `hidden beast` number, since 1 + 3 + 8 + 5 + 0 + 4 + 5 + 2 + 566 + 72 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4305979 + ... + 4616442.

It is an arithmetic number, because the mean of its divisors is an integer number (23140301457).

Almost surely, 2^{1385045256672} is an apocalyptic number.

1385045256672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1385045256672 is an abundant number, since it is smaller than the sum of its proper divisors (3613259858040).

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

1385045256672 is a wasteful number, since it uses less digits than its factorization.

1385045256672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8922462 (or 8922444 counting only the distinct ones).

The product of its (nonzero) digits is 12096000, while the sum is 54.

The spelling of 1385045256672 in words is "one trillion, three hundred eighty-five billion, forty-five million, two hundred fifty-six thousand, six hundred seventy-two".