40194686500 has 96 divisors (see below), whose sum is σ = 89073653760. Its totient is φ = 15842736000.

The previous prime is 40194686383. The next prime is 40194686533. The reversal of 40194686500 is 568649104.

40194686500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40194686500² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35983942 + ... + 35985058.

It is an arithmetic number, because the mean of its divisors is an integer number (927850560).

Almost surely, 2^40194686500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40194686500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44536826880).

40194686500 is an abundant number, since it is smaller than the sum of its proper divisors (48878967260).

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

40194686500 is a wasteful number, since it uses less digits than its factorization.

40194686500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126 (or 2114 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 40194686500 in words is "forty billion, one hundred ninety-four million, six hundred eighty-six thousand, five hundred".