78379288297298 has 4 divisors (see below), whose sum is σ = 117568932445950. Its totient is φ = 39189644148648.

The previous prime is 78379288297249. The next prime is 78379288297301. The reversal of 78379288297298 is 89279288297387.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 77256945105649 + 1122343191649 = 8789593^2 + 1059407^2 .

It is a super-2 number, since 2×78379288297298² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19594822074323 + ... + 19594822074326.

Almost surely, 2^{78379288297298} is an apocalyptic number.

78379288297298 is a deficient number, since it is larger than the sum of its proper divisors (39189644148652).

78379288297298 is a wasteful number, since it uses less digits than its factorization.

78379288297298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39189644148651.

The product of its digits is 24580620288, while the sum is 89.

Adding to 78379288297298 its sum of digits (89), we get a palindrome (78379288297387).

The spelling of 78379288297298 in words is "seventy-eight trillion, three hundred seventy-nine billion, two hundred eighty-eight million, two hundred ninety-seven thousand, two hundred ninety-eight".