7278772079997 has 192 divisors, whose sum is σ = 12175799731200. Its totient is φ = 4293184896000.

The previous prime is 7278772079987. The next prime is 7278772080059. The reversal of 7278772079997 is 7999702778727.

It is not a de Polignac number, because 7278772079997 - 2⁶ = 7278772079933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7278772079947) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 7637745673 + ... + 7637746625.

It is an arithmetic number, because the mean of its divisors is an integer number (63415623600).

Almost surely, 2^{7278772079997} is an apocalyptic number.

It is an amenable number.

7278772079997 is a deficient number, since it is larger than the sum of its proper divisors (4897027651203).

7278772079997 is a wasteful number, since it uses less digits than its factorization.

7278772079997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457 (or 1440 counting only the distinct ones).

The product of its (nonzero) digits is 2744515872, while the sum is 81.

The spelling of 7278772079997 in words is "seven trillion, two hundred seventy-eight billion, seven hundred seventy-two million, seventy-nine thousand, nine hundred ninety-seven".