87101858077 has 4 divisors (see below), whose sum is σ = 93802001020. Its totient is φ = 80401715136.

The previous prime is 87101858069. The next prime is 87101858113. The reversal of 87101858077 is 77085810178.

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

It can be written as a sum of positive squares in 2 ways, for example, as 43633360996 + 43468497081 = 208886^2 + 208491^2 .

It is a cyclic number.

It is not a de Polignac number, because 87101858077 - 2³ = 87101858069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87101852077) 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, 3350071452 + ... + 3350071477.

It is an arithmetic number, because the mean of its divisors is an integer number (23450500255).

Almost surely, 2^87101858077 is an apocalyptic number.

It is an amenable number.

87101858077 is a deficient number, since it is larger than the sum of its proper divisors (6700142943).

87101858077 is a wasteful number, since it uses less digits than its factorization.

87101858077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6700142942.

The product of its (nonzero) digits is 878080, while the sum is 52.

The spelling of 87101858077 in words is "eighty-seven billion, one hundred one million, eight hundred fifty-eight thousand, seventy-seven".