39416720649 has 32 divisors (see below), whose sum is σ = 56476569600. Its totient is φ = 24396303360.

The previous prime is 39416720641. The next prime is 39416720677. The reversal of 39416720649 is 94602761493.

It is a happy number.

39416720649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 39416720649 - 2³ = 39416720641 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (39416720641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 260329 + ... + 382889.

It is an arithmetic number, because the mean of its divisors is an integer number (1764892800).

Almost surely, 2^39416720649 is an apocalyptic number.

It is an amenable number.

39416720649 is a deficient number, since it is larger than the sum of its proper divisors (17059848951).

39416720649 is a wasteful number, since it uses less digits than its factorization.

39416720649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122725.

The product of its (nonzero) digits is 1959552, while the sum is 51.

The spelling of 39416720649 in words is "thirty-nine billion, four hundred sixteen million, seven hundred twenty thousand, six hundred forty-nine".