78352564921674 has 32 divisors (see below), whose sum is σ = 162314738464320. Its totient is φ = 25184875575552.

The previous prime is 78352564921651. The next prime is 78352564921679. The reversal of 78352564921674 is 47612946525387.

It is a super-2 number, since 2×78352564921674² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78352564921599 and 78352564921608.

It is not an unprimeable number, because it can be changed into a prime (78352564921679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 285950799 + ... + 286224674.

It is an arithmetic number, because the mean of its divisors is an integer number (5072335577010).

Almost surely, 2^{78352564921674} is an apocalyptic number.

78352564921674 is an abundant number, since it is smaller than the sum of its proper divisors (83962173542646).

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

78352564921674 is a wasteful number, since it uses less digits than its factorization.

78352564921674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572176294.

The product of its digits is 609638400, while the sum is 69.

The spelling of 78352564921674 in words is "seventy-eight trillion, three hundred fifty-two billion, five hundred sixty-four million, nine hundred twenty-one thousand, six hundred seventy-four".