85907022415 has 4 divisors (see below), whose sum is σ = 103088426904. Its totient is φ = 68725617928.

The previous prime is 85907022359. The next prime is 85907022419. The reversal of 85907022415 is 51422070958.

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

It is a cyclic number.

It is not a de Polignac number, because 85907022415 - 2⁷ = 85907022287 is a prime.

It is a super-2 number, since 2×85907022415² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85907022419) 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, 8590702237 + ... + 8590702246.

It is an arithmetic number, because the mean of its divisors is an integer number (25772106726).

Almost surely, 2^85907022415 is an apocalyptic number.

85907022415 is a deficient number, since it is larger than the sum of its proper divisors (17181404489).

85907022415 is a wasteful number, since it uses less digits than its factorization.

85907022415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17181404488.

The product of its (nonzero) digits is 201600, while the sum is 43.

The spelling of 85907022415 in words is "eighty-five billion, nine hundred seven million, twenty-two thousand, four hundred fifteen".