78424702988 has 12 divisors (see below), whose sum is σ = 137259250800. Its totient is φ = 39207774192.

The previous prime is 78424702973. The next prime is 78424703033. The reversal of 78424702988 is 88920742487.

It is a super-2 number, since 2×78424702988² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1105631 + ... + 1174422.

It is an arithmetic number, because the mean of its divisors is an integer number (11438270900).

Almost surely, 2^78424702988 is an apocalyptic number.

It is an amenable number.

78424702988 is a deficient number, since it is larger than the sum of its proper divisors (58834547812).

78424702988 is a wasteful number, since it uses less digits than its factorization.

78424702988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2288656 (or 2288654 counting only the distinct ones).

The product of its (nonzero) digits is 14450688, while the sum is 59.

The spelling of 78424702988 in words is "seventy-eight billion, four hundred twenty-four million, seven hundred two thousand, nine hundred eighty-eight".