611371800138 has 64 divisors (see below), whose sum is σ = 1336964428800. Its totient is φ = 184839235200.

The previous prime is 611371800131. The next prime is 611371800157. The reversal of 611371800138 is 831008173116.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 611371800096 and 611371800105.

It is not an unprimeable number, because it can be changed into a prime (611371800131) 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, 98621163 + ... + 98627361.

It is an arithmetic number, because the mean of its divisors is an integer number (20890069200).

Almost surely, 2^611371800138 is an apocalyptic number.

611371800138 is an abundant number, since it is smaller than the sum of its proper divisors (725592628662).

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

611371800138 is a wasteful number, since it uses less digits than its factorization.

611371800138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9403.

The product of its (nonzero) digits is 24192, while the sum is 39.

The spelling of 611371800138 in words is "six hundred eleven billion, three hundred seventy-one million, eight hundred thousand, one hundred thirty-eight".