85402638337 has 8 divisors (see below), whose sum is σ = 86036526504. Its totient is φ = 84770362368.

The previous prime is 85402638329. The next prime is 85402638341. The reversal of 85402638337 is 73383620458.

It can be written as a sum of positive squares in 4 ways, for example, as 250145856 + 85152492481 = 15816^2 + 291809^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85402638337 - 2³ = 85402638329 is a prime.

It is a super-2 number, since 2×85402638337² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85402638137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296608 + ... + 508705.

It is an arithmetic number, because the mean of its divisors is an integer number (10754565813).

Almost surely, 2^85402638337 is an apocalyptic number.

It is an amenable number.

85402638337 is a deficient number, since it is larger than the sum of its proper divisors (633888167).

85402638337 is a wasteful number, since it uses less digits than its factorization.

85402638337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806099.

The product of its (nonzero) digits is 2903040, while the sum is 49.

The spelling of 85402638337 in words is "eighty-five billion, four hundred two million, six hundred thirty-eight thousand, three hundred thirty-seven".