1396840693632 has 64 divisors (see below), whose sum is σ = 3729003312000. Its totient is φ = 463273772544.

The previous prime is 1396840693631. The next prime is 1396840693639. The reversal of 1396840693632 is 2363960486931.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1396840693631) 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 7 ways as a sum of consecutive naturals, for example, 9063298 + ... + 9216129.

It is an arithmetic number, because the mean of its divisors is an integer number (58265676750).

Almost surely, 2^{1396840693632} is an apocalyptic number.

1396840693632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1396840693632 is an abundant number, since it is smaller than the sum of its proper divisors (2332162618368).

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

1396840693632 is a wasteful number, since it uses less digits than its factorization.

1396840693632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18279643 (or 18279631 counting only the distinct ones).

The product of its (nonzero) digits is 30233088, while the sum is 60.

The spelling of 1396840693632 in words is "one trillion, three hundred ninety-six billion, eight hundred forty million, six hundred ninety-three thousand, six hundred thirty-two".