123154664145 has 32 divisors (see below), whose sum is σ = 205719782400. Its totient is φ = 62794632384.

The previous prime is 123154664137. The next prime is 123154664147. The reversal of 123154664145 is 541466451321.

It is not a de Polignac number, because 123154664145 - 2³ = 123154664137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123154664097 and 123154664106.

It is not an unprimeable number, because it can be changed into a prime (123154664147) 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, 592566 + ... + 772944.

It is an arithmetic number, because the mean of its divisors is an integer number (6428743200).

Almost surely, 2^123154664145 is an apocalyptic number.

123154664145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123154664145 is a deficient number, since it is larger than the sum of its proper divisors (82565118255).

123154664145 is a wasteful number, since it uses less digits than its factorization.

123154664145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182389.

The product of its digits is 345600, while the sum is 42.

The spelling of 123154664145 in words is "one hundred twenty-three billion, one hundred fifty-four million, six hundred sixty-four thousand, one hundred forty-five".