40920132457777 has 2 divisors, whose sum is σ = 40920132457778. Its totient is φ = 40920132457776.

The previous prime is 40920132457751. The next prime is 40920132457817. The reversal of 40920132457777 is 77775423102904.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38315988580081 + 2604143877696 = 6189991^2 + 1613736^2 .

It is a cyclic number.

It is not a de Polignac number, because 40920132457777 - 2³¹ = 40917984974129 is a prime.

It is not a weakly prime, because it can be changed into another prime (40920132157777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20460066228888 + 20460066228889.

It is an arithmetic number, because the mean of its divisors is an integer number (20460066228889).

Almost surely, 2^{40920132457777} is an apocalyptic number.

It is an amenable number.

40920132457777 is a deficient number, since it is larger than the sum of its proper divisors (1).

40920132457777 is an equidigital number, since it uses as much as digits as its factorization.

40920132457777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20744640, while the sum is 58.

The spelling of 40920132457777 in words is "forty trillion, nine hundred twenty billion, one hundred thirty-two million, four hundred fifty-seven thousand, seven hundred seventy-seven".