55778346829 has 8 divisors (see below), whose sum is σ = 56158581600. Its totient is φ = 55398190800.

The previous prime is 55778346823. The next prime is 55778346863. The reversal of 55778346829 is 92864387755.

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 55778346829 - 2⁹ = 55778346317 is a prime.

It is a super-3 number, since 3×55778346829³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55778346823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2433834 + ... + 2456644.

It is an arithmetic number, because the mean of its divisors is an integer number (7019822700).

Almost surely, 2^55778346829 is an apocalyptic number.

It is an amenable number.

55778346829 is a deficient number, since it is larger than the sum of its proper divisors (380234771).

55778346829 is a wasteful number, since it uses less digits than its factorization.

55778346829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39371.

The product of its digits is 101606400, while the sum is 64.

The spelling of 55778346829 in words is "fifty-five billion, seven hundred seventy-eight million, three hundred forty-six thousand, eight hundred twenty-nine".