180578378097 has 72 divisors (see below), whose sum is σ = 303636528000. Its totient is φ = 103035763584.

The previous prime is 180578378089. The next prime is 180578378119. The reversal of 180578378097 is 790873875081.

It is not a de Polignac number, because 180578378097 - 2³ = 180578378089 is a prime.

It is a super-2 number, since 2×180578378097² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (180578378017) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1291779 + ... + 1424727.

It is an arithmetic number, because the mean of its divisors is an integer number (4217174000).

Almost surely, 2^180578378097 is an apocalyptic number.

It is an amenable number.

180578378097 is a deficient number, since it is larger than the sum of its proper divisors (123058149903).

180578378097 is a wasteful number, since it uses less digits than its factorization.

180578378097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133047 (or 133031 counting only the distinct ones).

The product of its (nonzero) digits is 23708160, while the sum is 63.

The spelling of 180578378097 in words is "one hundred eighty billion, five hundred seventy-eight million, three hundred seventy-eight thousand, ninety-seven".