1987348066744 has 32 divisors (see below), whose sum is σ = 3889725372000. Its totient is φ = 950968494720.

The previous prime is 1987348066727. The next prime is 1987348066763. The reversal of 1987348066744 is 4476608437891.

It is a super-2 number, since 2×1987348066744² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1987348066744.

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, 55014844 + ... + 55050955.

It is an arithmetic number, because the mean of its divisors is an integer number (121553917875).

Almost surely, 2^{1987348066744} is an apocalyptic number.

It is an amenable number.

1987348066744 is a deficient number, since it is larger than the sum of its proper divisors (1902377305256).

1987348066744 is a wasteful number, since it uses less digits than its factorization.

1987348066744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110065903 (or 110065899 counting only the distinct ones).

The product of its (nonzero) digits is 195084288, while the sum is 67.

The spelling of 1987348066744 in words is "one trillion, nine hundred eighty-seven billion, three hundred forty-eight million, sixty-six thousand, seven hundred forty-four".