86946525649 has 4 divisors (see below), whose sum is σ = 86949921600. Its totient is φ = 86943129700.

The previous prime is 86946525643. The next prime is 86946525661. The reversal of 86946525649 is 94652564968.

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 a cyclic number.

It is not a de Polignac number, because 86946525649 - 2²⁷ = 86812307921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86946525643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1659277 + ... + 1710874.

It is an arithmetic number, because the mean of its divisors is an integer number (21737480400).

Almost surely, 2^86946525649 is an apocalyptic number.

It is an amenable number.

86946525649 is a deficient number, since it is larger than the sum of its proper divisors (3395951).

86946525649 is a wasteful number, since it uses less digits than its factorization.

86946525649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3395950.

The product of its digits is 111974400, while the sum is 64.

The spelling of 86946525649 in words is "eighty-six billion, nine hundred forty-six million, five hundred twenty-five thousand, six hundred forty-nine".