87142966257 has 4 divisors (see below), whose sum is σ = 116190621680. Its totient is φ = 58095310836.

The previous prime is 87142966243. The next prime is 87142966277. The reversal of 87142966257 is 75266924178.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 87142966257 - 2⁷ = 87142966129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87142966197 and 87142966206.

It is not an unprimeable number, because it can be changed into a prime (87142966277) 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, 14523827707 + ... + 14523827712.

It is an arithmetic number, because the mean of its divisors is an integer number (29047655420).

Almost surely, 2^87142966257 is an apocalyptic number.

It is an amenable number.

87142966257 is a deficient number, since it is larger than the sum of its proper divisors (29047655423).

87142966257 is a wasteful number, since it uses less digits than its factorization.

87142966257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29047655422.

The product of its digits is 10160640, while the sum is 57.

The spelling of 87142966257 in words is "eighty-seven billion, one hundred forty-two million, nine hundred sixty-six thousand, two hundred fifty-seven".