87567371377 has 4 divisors (see below), whose sum is σ = 88434375156. Its totient is φ = 86700367600.

The previous prime is 87567371369. The next prime is 87567371387. The reversal of 87567371377 is 77317376578.

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 76862572081 + 10704799296 = 277241^2 + 103464^2 .

It is a cyclic number.

It is not a de Polignac number, because 87567371377 - 2³ = 87567371369 is a prime.

It is a super-2 number, since 2×87567371377² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87567371317) 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, 433501738 + ... + 433501939.

It is an arithmetic number, because the mean of its divisors is an integer number (22108593789).

Almost surely, 2^87567371377 is an apocalyptic number.

It is an amenable number.

87567371377 is a deficient number, since it is larger than the sum of its proper divisors (867003779).

87567371377 is a wasteful number, since it uses less digits than its factorization.

87567371377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867003778.

The product of its digits is 36303120, while the sum is 61.

The spelling of 87567371377 in words is "eighty-seven billion, five hundred sixty-seven million, three hundred seventy-one thousand, three hundred seventy-seven".