7294138891923 has 32 divisors (see below), whose sum is σ = 10743600301056. Its totient is φ = 4373843044608.

The previous prime is 7294138891913. The next prime is 7294138891951. The reversal of 7294138891923 is 3291988314927.

It is a happy number.

It is not a de Polignac number, because 7294138891923 - 2⁶ = 7294138891859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7294138891913) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8348986 + ... + 9181167.

It is an arithmetic number, because the mean of its divisors is an integer number (335737509408).

Almost surely, 2^{7294138891923} is an apocalyptic number.

7294138891923 is a deficient number, since it is larger than the sum of its proper divisors (3449461409133).

7294138891923 is a wasteful number, since it uses less digits than its factorization.

7294138891923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17530443.

The product of its digits is 47029248, while the sum is 66.

The spelling of 7294138891923 in words is "seven trillion, two hundred ninety-four billion, one hundred thirty-eight million, eight hundred ninety-one thousand, nine hundred twenty-three".