123278799397 has 8 divisors (see below), whose sum is σ = 139749246560. Its totient is φ = 107806561200.

The previous prime is 123278799379. The next prime is 123278799401. The reversal of 123278799397 is 793997872321.

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

It is not a de Polignac number, because 123278799397 - 2²³ = 123270410789 is a prime.

It is a super-4 number, since 4×123278799397⁴ (a number of 45 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123278799367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249551979 + ... + 249552472.

It is an arithmetic number, because the mean of its divisors is an integer number (17468655820).

Almost surely, 2^123278799397 is an apocalyptic number.

It is an amenable number.

123278799397 is a deficient number, since it is larger than the sum of its proper divisors (16470447163).

123278799397 is a wasteful number, since it uses less digits than its factorization.

123278799397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499104483.

The product of its digits is 72013536, while the sum is 67.

The spelling of 123278799397 in words is "one hundred twenty-three billion, two hundred seventy-eight million, seven hundred ninety-nine thousand, three hundred ninety-seven".