2085172511394 has 32 divisors (see below), whose sum is σ = 4837244553216. Its totient is φ = 586871580240.

The previous prime is 2085172511351. The next prime is 2085172511399. The reversal of 2085172511394 is 4931152715802.

It is a happy number.

It is a super-2 number, since 2×2085172511394² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2085172511399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 370496922 + ... + 370502549.

It is an arithmetic number, because the mean of its divisors is an integer number (151163892288).

Almost surely, 2^{2085172511394} is an apocalyptic number.

2085172511394 is an abundant number, since it is smaller than the sum of its proper divisors (2752072041822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2085172511394 is a wasteful number, since it uses less digits than its factorization.

2085172511394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740999550.

The product of its (nonzero) digits is 604800, while the sum is 48.

The spelling of 2085172511394 in words is "two trillion, eighty-five billion, one hundred seventy-two million, five hundred eleven thousand, three hundred ninety-four".