87775086901 has 4 divisors (see below), whose sum is σ = 87778549612. Its totient is φ = 87771624192.

The previous prime is 87775086887. The next prime is 87775086929. The reversal of 87775086901 is 10968057778.

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 82368426001 + 5406660900 = 286999^2 + 73530^2 .

It is a cyclic number.

It is not a de Polignac number, because 87775086901 - 2²³ = 87766698293 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 (87775086401) 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, 1693050 + ... + 1744123.

It is an arithmetic number, because the mean of its divisors is an integer number (21944637403).

Almost surely, 2^87775086901 is an apocalyptic number.

It is an amenable number.

87775086901 is a deficient number, since it is larger than the sum of its proper divisors (3462711).

87775086901 is a wasteful number, since it uses less digits than its factorization.

87775086901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3462710.

The product of its (nonzero) digits is 5927040, while the sum is 58.

The spelling of 87775086901 in words is "eighty-seven billion, seven hundred seventy-five million, eighty-six thousand, nine hundred one".