78809708974 has 8 divisors (see below), whose sum is σ = 118226023920. Its totient is φ = 39401034336.

The previous prime is 78809708969. The next prime is 78809709007. The reversal of 78809708974 is 47980790887.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×78809708974² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1884219 + ... + 1925590.

It is an arithmetic number, because the mean of its divisors is an integer number (14778252990).

Almost surely, 2^78809708974 is an apocalyptic number.

78809708974 is a deficient number, since it is larger than the sum of its proper divisors (39416314946).

78809708974 is a wasteful number, since it uses less digits than its factorization.

78809708974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3820154.

The product of its (nonzero) digits is 56899584, while the sum is 67.

The spelling of 78809708974 in words is "seventy-eight billion, eight hundred nine million, seven hundred eight thousand, nine hundred seventy-four".