85398608477 has 32 divisors (see below), whose sum is σ = 106240184064. Its totient is φ = 66840192000.

The previous prime is 85398608473. The next prime is 85398608479. The reversal of 85398608477 is 77480689358.

It is a cyclic number.

It is not a de Polignac number, because 85398608477 - 2² = 85398608473 is a prime.

It is a super-4 number, since 4×85398608477⁴ (a number of 45 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85398608473) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12505538 + ... + 12512364.

It is an arithmetic number, because the mean of its divisors is an integer number (3320005752).

Almost surely, 2^85398608477 is an apocalyptic number.

It is an amenable number.

85398608477 is a deficient number, since it is larger than the sum of its proper divisors (20841575587).

85398608477 is a wasteful number, since it uses less digits than its factorization.

85398608477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8309.

The product of its (nonzero) digits is 81285120, while the sum is 65.

The spelling of 85398608477 in words is "eighty-five billion, three hundred ninety-eight million, six hundred eight thousand, four hundred seventy-seven".