40726215718668 has 18 divisors (see below), whose sum is σ = 102946823066724. Its totient is φ = 13575405239544.

The previous prime is 40726215718663. The next prime is 40726215718733. The reversal of 40726215718668 is 86681751262704.

40726215718668 is a `hidden beast` number, since 40 + 7 + 262 + 157 + 186 + 6 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (40726215718663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 565641884946 + ... + 565641885017.

Almost surely, 2^{40726215718668} is an apocalyptic number.

It is an amenable number.

40726215718668 is an abundant number, since it is smaller than the sum of its proper divisors (62220607348056).

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

40726215718668 is a wasteful number, since it uses less digits than its factorization.

40726215718668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131283769973 (or 1131283769968 counting only the distinct ones).

The product of its (nonzero) digits is 54190080, while the sum is 63.

The spelling of 40726215718668 in words is "forty trillion, seven hundred twenty-six billion, two hundred fifteen million, seven hundred eighteen thousand, six hundred sixty-eight".