78472338784554 has 64 divisors (see below), whose sum is σ = 184458659954688. Its totient is φ = 21941244830400.

The previous prime is 78472338784549. The next prime is 78472338784639. The reversal of 78472338784554 is 45548783327487.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16794282 + ... + 20952149.

It is an arithmetic number, because the mean of its divisors is an integer number (2882166561792).

Almost surely, 2^{78472338784554} is an apocalyptic number.

78472338784554 is an abundant number, since it is smaller than the sum of its proper divisors (105986321170134).

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

78472338784554 is a wasteful number, since it uses less digits than its factorization.

78472338784554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37748883.

The product of its digits is 5057740800, while the sum is 75.

The spelling of 78472338784554 in words is "seventy-eight trillion, four hundred seventy-two billion, three hundred thirty-eight million, seven hundred eighty-four thousand, five hundred fifty-four".