87957009499 has 4 divisors (see below), whose sum is σ = 88589793880. Its totient is φ = 87324225120.

The previous prime is 87957009397. The next prime is 87957009509. The reversal of 87957009499 is 99490075978.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99490075978 = 2 ⋅49745037989.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87957009499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87957009199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 316391982 + ... + 316392259.

It is an arithmetic number, because the mean of its divisors is an integer number (22147448470).

Almost surely, 2^87957009499 is an apocalyptic number.

87957009499 is a deficient number, since it is larger than the sum of its proper divisors (632784381).

87957009499 is a wasteful number, since it uses less digits than its factorization.

87957009499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632784380.

The product of its (nonzero) digits is 51438240, while the sum is 67.

The spelling of 87957009499 in words is "eighty-seven billion, nine hundred fifty-seven million, nine thousand, four hundred ninety-nine".