85660252251 has 16 divisors (see below), whose sum is σ = 137399904000. Its totient is φ = 46372467168.

The previous prime is 85660252231. The next prime is 85660252259. The reversal of 85660252251 is 15225206658.

It is not a de Polignac number, because 85660252251 - 2¹⁷ = 85660121179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85660252259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107343276 + ... + 107344073.

It is an arithmetic number, because the mean of its divisors is an integer number (8587494000).

Almost surely, 2^85660252251 is an apocalyptic number.

85660252251 is a deficient number, since it is larger than the sum of its proper divisors (51739651749).

85660252251 is a wasteful number, since it uses less digits than its factorization.

85660252251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214687378.

The product of its (nonzero) digits is 288000, while the sum is 42.

The spelling of 85660252251 in words is "eighty-five billion, six hundred sixty million, two hundred fifty-two thousand, two hundred fifty-one".