13621646012 has 24 divisors (see below), whose sum is σ = 25702686576. Its totient is φ = 6279291648.

The previous prime is 13621645997. The next prime is 13621646023. The reversal of 13621646012 is 21064612631.

It is a self number, because there is not a number n which added to its sum of digits gives 13621646012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115373 + ... + 201380.

It is an arithmetic number, because the mean of its divisors is an integer number (1070945274).

Almost surely, 2^13621646012 is an apocalyptic number.

It is an amenable number.

13621646012 is a deficient number, since it is larger than the sum of its proper divisors (12081040564).

13621646012 is a wasteful number, since it uses less digits than its factorization.

13621646012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317597 (or 317595 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The spelling of 13621646012 in words is "thirteen billion, six hundred twenty-one million, six hundred forty-six thousand, twelve".