123654357340 has 12 divisors (see below), whose sum is σ = 259674150456. Its totient is φ = 49461742928.

The previous prime is 123654357287. The next prime is 123654357367. The reversal of 123654357340 is 43753456321.

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, 3091358914 + ... + 3091358953.

It is an arithmetic number, because the mean of its divisors is an integer number (21639512538).

Almost surely, 2^123654357340 is an apocalyptic number.

123654357340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123654357340 is an abundant number, since it is smaller than the sum of its proper divisors (136019793116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123654357340 is a wasteful number, since it uses less digits than its factorization.

123654357340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6182717876 (or 6182717874 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 43.

The spelling of 123654357340 in words is "one hundred twenty-three billion, six hundred fifty-four million, three hundred fifty-seven thousand, three hundred forty".