7794113615551 has 16 divisors (see below), whose sum is σ = 8271416672064. Its totient is φ = 7318909177344.

The previous prime is 7794113615507. The next prime is 7794113615573. The reversal of 7794113615551 is 1555163114977.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 7794113615551 - 2⁹ = 7794113615039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7794113615492 and 7794113615501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7794113615051) 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, 37092781 + ... + 37302313.

It is an arithmetic number, because the mean of its divisors is an integer number (516963542004).

Almost surely, 2^{7794113615551} is an apocalyptic number.

7794113615551 is a deficient number, since it is larger than the sum of its proper divisors (477303056513).

7794113615551 is a wasteful number, since it uses less digits than its factorization.

7794113615551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214530.

The product of its digits is 3969000, while the sum is 55.

The spelling of 7794113615551 in words is "seven trillion, seven hundred ninety-four billion, one hundred thirteen million, six hundred fifteen thousand, five hundred fifty-one".