87257257563 has 8 divisors (see below), whose sum is σ = 132963440128. Its totient is φ = 49861290024.

The previous prime is 87257257547. The next prime is 87257257597. The reversal of 87257257563 is 36575275278.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87257257563 - 2⁴ = 87257257547 is a prime.

It is a super-2 number, since 2×87257257563² (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 (87257257063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2077553731 + ... + 2077553772.

It is an arithmetic number, because the mean of its divisors is an integer number (16620430016).

Almost surely, 2^87257257563 is an apocalyptic number.

87257257563 is a deficient number, since it is larger than the sum of its proper divisors (45706182565).

87257257563 is a wasteful number, since it uses less digits than its factorization.

87257257563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4155107513.

The product of its digits is 24696000, while the sum is 57.

The spelling of 87257257563 in words is "eighty-seven billion, two hundred fifty-seven million, two hundred fifty-seven thousand, five hundred sixty-three".