34478428861 has 4 divisors (see below), whose sum is σ = 35280252832. Its totient is φ = 33676604892.

The previous prime is 34478428847. The next prime is 34478428877. The reversal of 34478428861 is 16882487443.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 34478428861 - 2³⁵ = 118690493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34478428891) 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, 400911921 + ... + 400912006.

It is an arithmetic number, because the mean of its divisors is an integer number (8820063208).

Almost surely, 2^34478428861 is an apocalyptic number.

It is an amenable number.

34478428861 is a deficient number, since it is larger than the sum of its proper divisors (801823971).

34478428861 is an equidigital number, since it uses as much as digits as its factorization.

34478428861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801823970.

The product of its digits is 8257536, while the sum is 55.

The spelling of 34478428861 in words is "thirty-four billion, four hundred seventy-eight million, four hundred twenty-eight thousand, eight hundred sixty-one".