78203780464232 has 8 divisors (see below), whose sum is σ = 146632088370450. Its totient is φ = 39101890232112.

The previous prime is 78203780464193. The next prime is 78203780464289. The reversal of 78203780464232 is 23246408730287.

It can be written as a sum of positive squares in only one way, i.e., 77914622609476 + 289157854756 = 8826926^2 + 537734^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×78203780464232² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4887736279007 + ... + 4887736279022.

Almost surely, 2^{78203780464232} is an apocalyptic number.

It is an amenable number.

78203780464232 is a deficient number, since it is larger than the sum of its proper divisors (68428307906218).

78203780464232 is a wasteful number, since it uses less digits than its factorization.

78203780464232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9775472558035 (or 9775472558031 counting only the distinct ones).

The product of its (nonzero) digits is 21676032, while the sum is 56.

The spelling of 78203780464232 in words is "seventy-eight trillion, two hundred three billion, seven hundred eighty million, four hundred sixty-four thousand, two hundred thirty-two".