40078077481 has 16 divisors (see below), whose sum is σ = 45467452800. Its totient is φ = 35021179008.

The previous prime is 40078077433. The next prime is 40078077497. The reversal of 40078077481 is 18477087004.

It is a cyclic number.

It is not a de Polignac number, because 40078077481 - 2²³ = 40069688873 is a prime.

It is a super-2 number, since 2×40078077481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40078077181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264285 + ... + 387301.

It is an arithmetic number, because the mean of its divisors is an integer number (2841715800).

Almost surely, 2^40078077481 is an apocalyptic number.

It is an amenable number.

40078077481 is a deficient number, since it is larger than the sum of its proper divisors (5389375319).

40078077481 is a wasteful number, since it uses less digits than its factorization.

40078077481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124368.

The product of its (nonzero) digits is 351232, while the sum is 46.

The spelling of 40078077481 in words is "forty billion, seventy-eight million, seventy-seven thousand, four hundred eighty-one".