19766867794026 has 16 divisors (see below), whose sum is σ = 39559356951744. Its totient is φ = 6584685704064.

The previous prime is 19766867793997. The next prime is 19766867794027. The reversal of 19766867794026 is 62049776866791.

It is a super-2 number, since 2×19766867794026² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19766867794027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1067546791 + ... + 1067565306.

It is an arithmetic number, because the mean of its divisors is an integer number (2472459809484).

Almost surely, 2^{19766867794026} is an apocalyptic number.

19766867794026 is an abundant number, since it is smaller than the sum of its proper divisors (19792489157718).

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

19766867794026 is a wasteful number, since it uses less digits than its factorization.

19766867794026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2135113645.

The product of its (nonzero) digits is 2304433152, while the sum is 78.

The spelling of 19766867794026 in words is "nineteen trillion, seven hundred sixty-six billion, eight hundred sixty-seven million, seven hundred ninety-four thousand, twenty-six".