853667520407 has 6 divisors (see below), whose sum is σ = 924385540032. Its totient is φ = 788000787912.

The previous prime is 853667520401. The next prime is 853667520457. The reversal of 853667520407 is 704025766358.

It is a happy number.

It is not a de Polignac number, because 853667520407 - 2²⁰ = 853666471831 is a prime.

It is a super-2 number, since 2×853667520407² (a number of 25 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 (853667520401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2525643383 + ... + 2525643720.

It is an arithmetic number, because the mean of its divisors is an integer number (154064256672).

Almost surely, 2^853667520407 is an apocalyptic number.

853667520407 is a deficient number, since it is larger than the sum of its proper divisors (70718019625).

853667520407 is a wasteful number, since it uses less digits than its factorization.

853667520407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5051287129 (or 5051287116 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 53.

The spelling of 853667520407 in words is "eight hundred fifty-three billion, six hundred sixty-seven million, five hundred twenty thousand, four hundred seven".