40784726649 has 8 divisors (see below), whose sum is σ = 54399794400. Its totient is φ = 27179738336.

The previous prime is 40784726641. The next prime is 40784726651. The reversal of 40784726649 is 94662748704.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 40784726649 - 2³ = 40784726641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40784726641) 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, 2510412 + ... + 2526605.

It is an arithmetic number, because the mean of its divisors is an integer number (6799974300).

Almost surely, 2^40784726649 is an apocalyptic number.

It is an amenable number.

40784726649 is a deficient number, since it is larger than the sum of its proper divisors (13615067751).

40784726649 is a wasteful number, since it uses less digits than its factorization.

40784726649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5039719.

The product of its (nonzero) digits is 16257024, while the sum is 57.

The spelling of 40784726649 in words is "forty billion, seven hundred eighty-four million, seven hundred twenty-six thousand, six hundred forty-nine".