55854778513 has 8 divisors (see below), whose sum is σ = 58285656000. Its totient is φ = 53424101808.

The previous prime is 55854778489. The next prime is 55854778517. The reversal of 55854778513 is 31587745855.

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 55854778513 - 2¹⁷ = 55854647441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55854778517) 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, 906243 + ... + 965911.

It is an arithmetic number, because the mean of its divisors is an integer number (7285707000).

Almost surely, 2^55854778513 is an apocalyptic number.

It is an amenable number.

55854778513 is a deficient number, since it is larger than the sum of its proper divisors (2430877487).

55854778513 is a wasteful number, since it uses less digits than its factorization.

55854778513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100391.

The product of its digits is 23520000, while the sum is 58.

The spelling of 55854778513 in words is "fifty-five billion, eight hundred fifty-four million, seven hundred seventy-eight thousand, five hundred thirteen".