40191185034 has 432 divisors, whose sum is σ = 122189951520. Its totient is φ = 9453628800.

The previous prime is 40191184949. The next prime is 40191185039. The reversal of 40191185034 is 43058119104.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40191185034.

It is not an unprimeable number, because it can be changed into a prime (40191185039) by changing a digit.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 81855529 + ... + 81856019.

It is an arithmetic number, because the mean of its divisors is an integer number (282847110).

Almost surely, 2^40191185034 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40191185034, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61094975760).

40191185034 is an abundant number, since it is smaller than the sum of its proper divisors (81998766486).

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

40191185034 is a wasteful number, since it uses less digits than its factorization.

40191185034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607 (or 586 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The spelling of 40191185034 in words is "forty billion, one hundred ninety-one million, one hundred eighty-five thousand, thirty-four".