87937228551 has 4 divisors (see below), whose sum is σ = 117249638072. Its totient is φ = 58624819032.

The previous prime is 87937228543. The next prime is 87937228627. The reversal of 87937228551 is 15582273978.

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

It is not a de Polignac number, because 87937228551 - 2³ = 87937228543 is a prime.

It is a super-4 number, since 4×87937228551⁴ (a number of 45 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87937228491 and 87937228500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87937228531) 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, 14656204756 + ... + 14656204761.

It is an arithmetic number, because the mean of its divisors is an integer number (29312409518).

Almost surely, 2^87937228551 is an apocalyptic number.

87937228551 is a deficient number, since it is larger than the sum of its proper divisors (29312409521).

87937228551 is a wasteful number, since it uses less digits than its factorization.

87937228551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29312409520.

The product of its digits is 8467200, while the sum is 57.

The spelling of 87937228551 in words is "eighty-seven billion, nine hundred thirty-seven million, two hundred twenty-eight thousand, five hundred fifty-one".