87511800148861 has 8 divisors (see below), whose sum is σ = 101083148835264. Its totient is φ = 74876406544320.

The previous prime is 87511800148847. The next prime is 87511800148931. The reversal of 87511800148861 is 16884100811578.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87511800148861 - 2⁷ = 87511800148733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87511800148796 and 87511800148805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87511800118861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233988770265 + ... + 233988770638.

It is an arithmetic number, because the mean of its divisors is an integer number (12635393604408).

Almost surely, 2^{87511800148861} is an apocalyptic number.

It is an amenable number.

87511800148861 is a deficient number, since it is larger than the sum of its proper divisors (13571348686403).

87511800148861 is a wasteful number, since it uses less digits than its factorization.

87511800148861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467977540931.

The product of its (nonzero) digits is 3440640, while the sum is 58.

The spelling of 87511800148861 in words is "eighty-seven trillion, five hundred eleven billion, eight hundred million, one hundred forty-eight thousand, eight hundred sixty-one".