78552788354 has 4 divisors (see below), whose sum is σ = 117829182534. Its totient is φ = 39276394176.

The previous prime is 78552788351. The next prime is 78552788357. The reversal of 78552788354 is 45388725587.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (78552788351) and next prime (78552788357).

It can be written as a sum of positive squares in only one way, i.e., 61789530625 + 16763257729 = 248575^2 + 129473^2 .

It is not an unprimeable number, because it can be changed into a prime (78552788351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19638197087 + ... + 19638197090.

Almost surely, 2^78552788354 is an apocalyptic number.

78552788354 is a deficient number, since it is larger than the sum of its proper divisors (39276394180).

78552788354 is a wasteful number, since it uses less digits than its factorization.

78552788354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39276394179.

The product of its digits is 75264000, while the sum is 62.

The spelling of 78552788354 in words is "seventy-eight billion, five hundred fifty-two million, seven hundred eighty-eight thousand, three hundred fifty-four".