78743094544 has 75 divisors (see below), whose sum is σ = 159839407365. Its totient is φ = 37579559040.

The previous prime is 78743094527. The next prime is 78743094569. The reversal of 78743094544 is 44549034787.

The square root of 78743094544 is 280612.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 44698416400 + 34044678144 = 211420^2 + 184512^2 .

It is a super-3 number, since 3×78743094544³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 1078672492 + ... + 1078672564.

Almost surely, 2^78743094544 is an apocalyptic number.

78743094544 is the 280612-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78743094544

78743094544 is an abundant number, since it is smaller than the sum of its proper divisors (81096312821).

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

78743094544 is an frugal number, since it uses more digits than its factorization.

78743094544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278 (or 106 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 55.

The spelling of 78743094544 in words is "seventy-eight billion, seven hundred forty-three million, ninety-four thousand, five hundred forty-four".