123008137196878 has 8 divisors (see below), whose sum is σ = 185141940286968. Its totient is φ = 61294157101224.

The previous prime is 123008137196839. The next prime is 123008137196881. The reversal of 123008137196878 is 878691731800321.

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

It is a super-2 number, since 2×123008137196878² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

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, 104955747876 + ... + 104955749047.

It is an arithmetic number, because the mean of its divisors is an integer number (23142742535871).

Almost surely, 2^{123008137196878} is an apocalyptic number.

123008137196878 is a deficient number, since it is larger than the sum of its proper divisors (62133803090090).

123008137196878 is a wasteful number, since it uses less digits than its factorization.

123008137196878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209911497218.

The product of its (nonzero) digits is 24385536, while the sum is 64.

The spelling of 123008137196878 in words is "one hundred twenty-three trillion, eight billion, one hundred thirty-seven million, one hundred ninety-six thousand, eight hundred seventy-eight".