40407077155 has 4 divisors (see below), whose sum is σ = 48488492592. Its totient is φ = 32325661720.

The previous prime is 40407077099. The next prime is 40407077159. The reversal of 40407077155 is 55177070404.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 40407077155 - 2¹⁵ = 40407044387 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40407077159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4040707711 + ... + 4040707720.

It is an arithmetic number, because the mean of its divisors is an integer number (12122123148).

Almost surely, 2^40407077155 is an apocalyptic number.

40407077155 is a deficient number, since it is larger than the sum of its proper divisors (8081415437).

40407077155 is an equidigital number, since it uses as much as digits as its factorization.

40407077155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8081415436.

The product of its (nonzero) digits is 137200, while the sum is 40.

The spelling of 40407077155 in words is "forty billion, four hundred seven million, seventy-seven thousand, one hundred fifty-five".