87241772915 has 32 divisors (see below), whose sum is σ = 122628764160. Its totient is φ = 58875174400.

The previous prime is 87241772899. The next prime is 87241772929. The reversal of 87241772915 is 51927714278.

It is not a de Polignac number, because 87241772915 - 2⁴ = 87241772899 is a prime.

It is a super-2 number, since 2×87241772915² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 590705 + ... + 723474.

It is an arithmetic number, because the mean of its divisors is an integer number (3832148880).

Almost surely, 2^87241772915 is an apocalyptic number.

87241772915 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

87241772915 is a deficient number, since it is larger than the sum of its proper divisors (35386991245).

87241772915 is a wasteful number, since it uses less digits than its factorization.

87241772915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314283.

The product of its digits is 1975680, while the sum is 53.

The spelling of 87241772915 in words is "eighty-seven billion, two hundred forty-one million, seven hundred seventy-two thousand, nine hundred fifteen".