40765031999 has 4 divisors (see below), whose sum is σ = 40767225000. Its totient is φ = 40762839000.

The previous prime is 40765031987. The next prime is 40765032001. The reversal of 40765031999 is 99913056704.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 40765031999 - 2³² = 36470064703 is a prime.

It is a super-5 number, since 5×40765031999⁵ (a number of 54 digits) contains 55555 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40765031999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40765031959) 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, 1068377 + ... + 1105874.

It is an arithmetic number, because the mean of its divisors is an integer number (10191806250).

Almost surely, 2^40765031999 is an apocalyptic number.

40765031999 is a deficient number, since it is larger than the sum of its proper divisors (2193001).

40765031999 is a wasteful number, since it uses less digits than its factorization.

40765031999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2193000.

The product of its (nonzero) digits is 1837080, while the sum is 53.

The spelling of 40765031999 in words is "forty billion, seven hundred sixty-five million, thirty-one thousand, nine hundred ninety-nine".