1987233710715 has 96 divisors (see below), whose sum is σ = 3960735996672. Its totient is φ = 947711664000.

The previous prime is 1987233710647. The next prime is 1987233710717. The reversal of 1987233710715 is 5170173327891.

1987233710715 is a `hidden beast` number, since 198 + 7 + 2 + 337 + 107 + 15 = 666.

It is not a de Polignac number, because 1987233710715 - 2⁷ = 1987233710587 is a prime.

It is a super-2 number, since 2×1987233710715² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1987233710717) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 403501 + ... + 2034030.

It is an arithmetic number, because the mean of its divisors is an integer number (41257666632).

Almost surely, 2^{1987233710715} is an apocalyptic number.

1987233710715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1987233710715 is a deficient number, since it is larger than the sum of its proper divisors (1973502285957).

1987233710715 is a wasteful number, since it uses less digits than its factorization.

1987233710715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2437623 (or 2437611 counting only the distinct ones).

The product of its (nonzero) digits is 2222640, while the sum is 54.

The spelling of 1987233710715 in words is "one trillion, nine hundred eighty-seven billion, two hundred thirty-three million, seven hundred ten thousand, seven hundred fifteen".