78248032157450 has 24 divisors (see below), whose sum is σ = 145563269214252. Its totient is φ = 31294496862720.

The previous prime is 78248032157423. The next prime is 78248032157489. The reversal of 78248032157450 is 5475123084287.

It is a happy number.

78248032157450 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 6 ways, for example, as 21704054055121 + 56543978102329 = 4658761^2 + 7519573^2 .

It is a super-2 number, since 2×78248032157450² (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 11 ways as a sum of consecutive naturals, for example, 117564839 + ... + 118228538.

Almost surely, 2^{78248032157450} is an apocalyptic number.

78248032157450 is a deficient number, since it is larger than the sum of its proper divisors (67315237056802).

78248032157450 is a wasteful number, since it uses less digits than its factorization.

78248032157450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235800026 (or 235800021 counting only the distinct ones).

The product of its (nonzero) digits is 15052800, while the sum is 56.

The spelling of 78248032157450 in words is "seventy-eight trillion, two hundred forty-eight billion, thirty-two million, one hundred fifty-seven thousand, four hundred fifty".