78780554430472 has 64 divisors (see below), whose sum is σ = 156806254851120. Its totient is φ = 36977618608128.

The previous prime is 78780554430451. The next prime is 78780554430481. The reversal of 78780554430472 is 27403445508787.

It is a happy number.

78780554430472 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 18821766620836 + 59958787809636 = 4338406^2 + 7743306^2 .

It is a super-2 number, since 2×78780554430472² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96328108 + ... + 97142500.

Almost surely, 2^{78780554430472} is an apocalyptic number.

It is an amenable number.

78780554430472 is a deficient number, since it is larger than the sum of its proper divisors (78025700420648).

78780554430472 is a wasteful number, since it uses less digits than its factorization.

78780554430472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816250 (or 816246 counting only the distinct ones).

The product of its (nonzero) digits is 210739200, while the sum is 64.

The spelling of 78780554430472 in words is "seventy-eight trillion, seven hundred eighty billion, five hundred fifty-four million, four hundred thirty thousand, four hundred seventy-two".