40777422553991 has 2 divisors, whose sum is σ = 40777422553992. Its totient is φ = 40777422553990.

The previous prime is 40777422553921. The next prime is 40777422554107. The reversal of 40777422553991 is 19935522477704.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40777422553991 - 2¹⁰ = 40777422552967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40777422553921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20388711276995 + 20388711276996.

It is an arithmetic number, because the mean of its divisors is an integer number (20388711276996).

Almost surely, 2^{40777422553991} is an apocalyptic number.

40777422553991 is a deficient number, since it is larger than the sum of its proper divisors (1).

40777422553991 is an equidigital number, since it uses as much as digits as its factorization.

40777422553991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 133358400, while the sum is 65.

The spelling of 40777422553991 in words is "forty trillion, seven hundred seventy-seven billion, four hundred twenty-two million, five hundred fifty-three thousand, nine hundred ninety-one".