34478620287 has 4 divisors (see below), whose sum is σ = 45971493720. Its totient is φ = 22985746856.

The previous prime is 34478620283. The next prime is 34478620303. The reversal of 34478620287 is 78202687443.

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 34478620287 - 2² = 34478620283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34478620283) 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, 5746436712 + ... + 5746436717.

It is an arithmetic number, because the mean of its divisors is an integer number (11492873430).

Almost surely, 2^34478620287 is an apocalyptic number.

34478620287 is a deficient number, since it is larger than the sum of its proper divisors (11492873433).

34478620287 is a wasteful number, since it uses less digits than its factorization.

34478620287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11492873432.

The product of its (nonzero) digits is 3612672, while the sum is 51.

The spelling of 34478620287 in words is "thirty-four billion, four hundred seventy-eight million, six hundred twenty thousand, two hundred eighty-seven".