7423801813778 has 8 divisors (see below), whose sum is σ = 12726517395072. Its totient is φ = 3181629348756.

The previous prime is 7423801813751. The next prime is 7423801813793. The reversal of 7423801813778 is 8773181083247.

It is a happy number.

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

It is a super-2 number, since 2×7423801813778² (a number of 27 digits) contains 22 as substring.

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, 265135779050 + ... + 265135779077.

It is an arithmetic number, because the mean of its divisors is an integer number (1590814674384).

Almost surely, 2^{7423801813778} is an apocalyptic number.

7423801813778 is a deficient number, since it is larger than the sum of its proper divisors (5302715581294).

7423801813778 is a wasteful number, since it uses less digits than its factorization.

7423801813778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530271558136.

The product of its (nonzero) digits is 12644352, while the sum is 59.

The spelling of 7423801813778 in words is "seven trillion, four hundred twenty-three billion, eight hundred one million, eight hundred thirteen thousand, seven hundred seventy-eight".