78553426686330 has 128 divisors (see below), whose sum is σ = 191287641858048. Its totient is φ = 20643414285312.

The previous prime is 78553426686283. The next prime is 78553426686353. The reversal of 78553426686330 is 3368662435587.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 720374572 + ... + 720483608.

It is an arithmetic number, because the mean of its divisors is an integer number (1494434702016).

Almost surely, 2^{78553426686330} is an apocalyptic number.

78553426686330 is an abundant number, since it is smaller than the sum of its proper divisors (112734215171718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78553426686330 is a wasteful number, since it uses less digits than its factorization.

78553426686330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110440.

The product of its (nonzero) digits is 522547200, while the sum is 66.

The spelling of 78553426686330 in words is "seventy-eight trillion, five hundred fifty-three billion, four hundred twenty-six million, six hundred eighty-six thousand, three hundred thirty".