87542198643311 has 4 divisors (see below), whose sum is σ = 87583628933472. Its totient is φ = 87500768353152.

The previous prime is 87542198643253. The next prime is 87542198643469. The reversal of 87542198643311 is 11334689124578.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87542198643311 - 2⁶ = 87542198643247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87542198603311) 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, 20715141911 + ... + 20715146136.

It is an arithmetic number, because the mean of its divisors is an integer number (21895907233368).

Almost surely, 2^{87542198643311} is an apocalyptic number.

87542198643311 is a deficient number, since it is larger than the sum of its proper divisors (41430290161).

87542198643311 is a wasteful number, since it uses less digits than its factorization.

87542198643311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41430290160.

The product of its digits is 34836480, while the sum is 62.

The spelling of 87542198643311 in words is "eighty-seven trillion, five hundred forty-two billion, one hundred ninety-eight million, six hundred forty-three thousand, three hundred eleven".