40320512761 has 16 divisors (see below), whose sum is σ = 42216370560. Its totient is φ = 38460593920.

The previous prime is 40320512747. The next prime is 40320512777. The reversal of 40320512761 is 16721502304.

40320512761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 40320512761 - 2⁷ = 40320512633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40320512461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 999366 + ... + 1038928.

It is an arithmetic number, because the mean of its divisors is an integer number (2638523160).

Almost surely, 2^40320512761 is an apocalyptic number.

It is an amenable number.

40320512761 is a deficient number, since it is larger than the sum of its proper divisors (1895857799).

40320512761 is a wasteful number, since it uses less digits than its factorization.

40320512761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40016.

The product of its (nonzero) digits is 10080, while the sum is 31.

The spelling of 40320512761 in words is "forty billion, three hundred twenty million, five hundred twelve thousand, seven hundred sixty-one".