53213314778 has 16 divisors (see below), whose sum is σ = 86846159400. Its totient is φ = 24306794496.

The previous prime is 53213314747. The next prime is 53213314783. The reversal of 53213314778 is 87741331235.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 39926833489 + 13286481289 = 199817^2 + 115267^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10547303 + ... + 10552346.

Almost surely, 2^53213314778 is an apocalyptic number.

53213314778 is a deficient number, since it is larger than the sum of its proper divisors (33632844622).

53213314778 is a wasteful number, since it uses less digits than its factorization.

53213314778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21099761.

The product of its digits is 423360, while the sum is 44.

The spelling of 53213314778 in words is "fifty-three billion, two hundred thirteen million, three hundred fourteen thousand, seven hundred seventy-eight".