1371863786644 has 24 divisors (see below), whose sum is σ = 2621850190848. Its totient is φ = 624250042080.

The previous prime is 1371863786609. The next prime is 1371863786659. The reversal of 1371863786644 is 4466873681731.

It is a happy number.

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, 185785012 + ... + 185792395.

It is an arithmetic number, because the mean of its divisors is an integer number (109243757952).

Almost surely, 2^{1371863786644} is an apocalyptic number.

It is an amenable number.

1371863786644 is a deficient number, since it is larger than the sum of its proper divisors (1249986404204).

1371863786644 is a wasteful number, since it uses less digits than its factorization.

1371863786644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371577495 (or 371577493 counting only the distinct ones).

The product of its digits is 97542144, while the sum is 64.

The spelling of 1371863786644 in words is "one trillion, three hundred seventy-one billion, eight hundred sixty-three million, seven hundred eighty-six thousand, six hundred forty-four".