40263976509 has 8 divisors (see below), whose sum is σ = 53696663712. Its totient is φ = 26836970160.

The previous prime is 40263976471. The next prime is 40263976513. The reversal of 40263976509 is 90567936204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40263976509 - 2¹¹ = 40263974461 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40263976409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1403647 + ... + 1432044.

It is an arithmetic number, because the mean of its divisors is an integer number (6712082964).

Almost surely, 2^40263976509 is an apocalyptic number.

It is an amenable number.

40263976509 is a deficient number, since it is larger than the sum of its proper divisors (13432687203).

40263976509 is a wasteful number, since it uses less digits than its factorization.

40263976509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2840427.

The product of its (nonzero) digits is 2449440, while the sum is 51.

The spelling of 40263976509 in words is "forty billion, two hundred sixty-three million, nine hundred seventy-six thousand, five hundred nine".