86461380251 has 4 divisors (see below), whose sum is σ = 86683646400. Its totient is φ = 86239114104.

The previous prime is 86461380233. The next prime is 86461380253. The reversal of 86461380251 is 15208316468.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86461380251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86461380253) 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, 111132491 + ... + 111133268.

It is an arithmetic number, because the mean of its divisors is an integer number (21670911600).

Almost surely, 2^86461380251 is an apocalyptic number.

86461380251 is a deficient number, since it is larger than the sum of its proper divisors (222266149).

86461380251 is a wasteful number, since it uses less digits than its factorization.

86461380251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222266148.

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 86461380251 in words is "eighty-six billion, four hundred sixty-one million, three hundred eighty thousand, two hundred fifty-one".