40147320077 has 2 divisors, whose sum is σ = 40147320078. Its totient is φ = 40147320076.

The previous prime is 40147320047. The next prime is 40147320149. The reversal of 40147320077 is 77002374104.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39609358441 + 537961636 = 199021^2 + 23194^2 .

It is a cyclic number.

It is not a de Polignac number, because 40147320077 - 2¹⁶ = 40147254541 is a prime.

It is a super-2 number, since 2×40147320077² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40147320047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20073660038 + 20073660039.

It is an arithmetic number, because the mean of its divisors is an integer number (20073660039).

Almost surely, 2^40147320077 is an apocalyptic number.

It is an amenable number.

40147320077 is a deficient number, since it is larger than the sum of its proper divisors (1).

40147320077 is an equidigital number, since it uses as much as digits as its factorization.

40147320077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32928, while the sum is 35.

The spelling of 40147320077 in words is "forty billion, one hundred forty-seven million, three hundred twenty thousand, seventy-seven".