87024467991 has 16 divisors (see below), whose sum is σ = 118774301184. Its totient is φ = 56646456384.

The previous prime is 87024467977. The next prime is 87024468023. The reversal of 87024467991 is 19976442078.

It is a happy number.

It is not a de Polignac number, because 87024467991 - 2⁷ = 87024467863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87024467591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 236770 + ... + 479696.

It is an arithmetic number, because the mean of its divisors is an integer number (7423393824).

Almost surely, 2^87024467991 is an apocalyptic number.

87024467991 is a deficient number, since it is larger than the sum of its proper divisors (31749833193).

87024467991 is a wasteful number, since it uses less digits than its factorization.

87024467991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245750.

The product of its (nonzero) digits is 6096384, while the sum is 57.

The spelling of 87024467991 in words is "eighty-seven billion, twenty-four million, four hundred sixty-seven thousand, nine hundred ninety-one".