78532295280 has 40 divisors (see below), whose sum is σ = 243450116112. Its totient is φ = 20941945344.

The previous prime is 78532295269. The next prime is 78532295293. The reversal of 78532295280 is 8259223587.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×78532295280² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163608709 + ... + 163609188.

Almost surely, 2^78532295280 is an apocalyptic number.

It is an amenable number.

78532295280 is an abundant number, since it is smaller than the sum of its proper divisors (164917820832).

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

78532295280 is a wasteful number, since it uses less digits than its factorization.

78532295280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327217913 (or 327217907 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 51.

The spelling of 78532295280 in words is "seventy-eight billion, five hundred thirty-two million, two hundred ninety-five thousand, two hundred eighty".