40978568791123 has 2 divisors, whose sum is σ = 40978568791124. Its totient is φ = 40978568791122.

The previous prime is 40978568791093. The next prime is 40978568791151. The reversal of 40978568791123 is 32119786587904.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40978568791123 - 2⁵ = 40978568791091 is a prime.

It is a super-2 number, since 2×40978568791123² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40978568791183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20489284395561 + 20489284395562.

It is an arithmetic number, because the mean of its divisors is an integer number (20489284395562).

It is a 1-persistent number, because it is pandigital, but 2⋅40978568791123 = 81957137582246 is not.

Almost surely, 2^{40978568791123} is an apocalyptic number.

40978568791123 is a deficient number, since it is larger than the sum of its proper divisors (1).

40978568791123 is an equidigital number, since it uses as much as digits as its factorization.

40978568791123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 182891520, while the sum is 70.

The spelling of 40978568791123 in words is "forty trillion, nine hundred seventy-eight billion, five hundred sixty-eight million, seven hundred ninety-one thousand, one hundred twenty-three".