1390942436436 has 72 divisors (see below), whose sum is σ = 4069142488320. Its totient is φ = 392381585856.

The previous prime is 1390942436419. The next prime is 1390942436441. The reversal of 1390942436436 is 6346342490931.

1390942436436 is a `hidden beast` number, since 1 + 3 + 90 + 94 + 2 + 4 + 36 + 436 = 666.

It is a super-2 number, since 2×1390942436436² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 34914351 + ... + 34954166.

Almost surely, 2^{1390942436436} is an apocalyptic number.

It is an amenable number.

1390942436436 is an abundant number, since it is smaller than the sum of its proper divisors (2678200051884).

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

1390942436436 is a wasteful number, since it uses less digits than its factorization.

1390942436436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69868613 (or 69868608 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 54.

The spelling of 1390942436436 in words is "one trillion, three hundred ninety billion, nine hundred forty-two million, four hundred thirty-six thousand, four hundred thirty-six".