1385351973612 has 48 divisors (see below), whose sum is σ = 3650532844000. Its totient is φ = 454213759680.

The previous prime is 1385351973589. The next prime is 1385351973613. The reversal of 1385351973612 is 2163791535831.

1385351973612 is a `hidden beast` number, since 1 + 3 + 8 + 5 + 3 + 5 + 19 + 7 + 3 + 612 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1385351973613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105135487 + ... + 105148662.

Almost surely, 2^{1385351973612} is an apocalyptic number.

1385351973612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1385351973612 is an abundant number, since it is smaller than the sum of its proper divisors (2265180870388).

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

1385351973612 is a wasteful number, since it uses less digits than its factorization.

1385351973612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210284223 (or 210284215 counting only the distinct ones).

The product of its digits is 4082400, while the sum is 54.

The spelling of 1385351973612 in words is "one trillion, three hundred eighty-five billion, three hundred fifty-one million, nine hundred seventy-three thousand, six hundred twelve".