85022137513 has 8 divisors (see below), whose sum is σ = 86426612936. Its totient is φ = 83618006400.

The previous prime is 85022137477. The next prime is 85022137537. The reversal of 85022137513 is 31573122058.

It can be written as a sum of positive squares in 4 ways, for example, as 1993443904 + 83028693609 = 44648^2 + 288147^2 .

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 85022137513 - 2¹³ = 85022129321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85022137573) 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, 437995 + ... + 601567.

It is an arithmetic number, because the mean of its divisors is an integer number (10803326617).

Almost surely, 2^85022137513 is an apocalyptic number.

It is an amenable number.

85022137513 is a deficient number, since it is larger than the sum of its proper divisors (1404475423).

85022137513 is a wasteful number, since it uses less digits than its factorization.

85022137513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172155.

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 85022137513 in words is "eighty-five billion, twenty-two million, one hundred thirty-seven thousand, five hundred thirteen".