161025839810 has 64 divisors (see below), whose sum is σ = 330109737984. Its totient is φ = 55980830400.

The previous prime is 161025839789. The next prime is 161025839813. The reversal of 161025839810 is 18938520161.

It is a super-2 number, since 2×161025839810² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161025839813) 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, 5376497 + ... + 5406363.

It is an arithmetic number, because the mean of its divisors is an integer number (5157964656).

Almost surely, 2^161025839810 is an apocalyptic number.

161025839810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161025839810 is an abundant number, since it is smaller than the sum of its proper divisors (169083898174).

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

161025839810 is a wasteful number, since it uses less digits than its factorization.

161025839810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32039.

The product of its (nonzero) digits is 103680, while the sum is 44.

The spelling of 161025839810 in words is "one hundred sixty-one billion, twenty-five million, eight hundred thirty-nine thousand, eight hundred ten".