18640202616126 has 96 divisors (see below), whose sum is σ = 49747010040000. Its totient is φ = 4912160827392.

The previous prime is 18640202616121. The next prime is 18640202616131. The reversal of 18640202616126 is 62161620204681.

It is a happy number.

18640202616126 is a `hidden beast` number, since 1 + 8 + 6 + 4 + 0 + 2 + 0 + 2 + 616 + 1 + 26 = 666.

It is an interprime number because it is at equal distance from previous prime (18640202616121) and next prime (18640202616131).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18640202616121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2509725 + ... + 6601448.

It is an arithmetic number, because the mean of its divisors is an integer number (518198021250).

Almost surely, 2^{18640202616126} is an apocalyptic number.

18640202616126 is an abundant number, since it is smaller than the sum of its proper divisors (31106807423874).

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

18640202616126 is a wasteful number, since it uses less digits than its factorization.

18640202616126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9112450 (or 9112447 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 18640202616126 in words is "eighteen trillion, six hundred forty billion, two hundred two million, six hundred sixteen thousand, one hundred twenty-six".