1987952075415 has 40 divisors (see below), whose sum is σ = 3596281714080. Its totient is φ = 1050514100928.

The previous prime is 1987952075411. The next prime is 1987952075423. The reversal of 1987952075415 is 5145702597891.

1987952075415 is a `hidden beast` number, since 1 + 9 + 8 + 7 + 9 + 5 + 207 + 5 + 415 = 666.

It is not a de Polignac number, because 1987952075415 - 2² = 1987952075411 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1987952075411) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 22472019 + ... + 22560308.

It is an arithmetic number, because the mean of its divisors is an integer number (89907042852).

Almost surely, 2^{1987952075415} is an apocalyptic number.

1987952075415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1987952075415 is a deficient number, since it is larger than the sum of its proper divisors (1608329638665).

1987952075415 is a wasteful number, since it uses less digits than its factorization.

1987952075415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45032453 (or 45032444 counting only the distinct ones).

The product of its (nonzero) digits is 31752000, while the sum is 63.

The spelling of 1987952075415 in words is "one trillion, nine hundred eighty-seven billion, nine hundred fifty-two million, seventy-five thousand, four hundred fifteen".