138451123859 has 16 divisors (see below), whose sum is σ = 142005747456. Its totient is φ = 134946352800.

The previous prime is 138451123843. The next prime is 138451123891. The reversal of 138451123859 is 958321154831.

It is a cyclic number.

It is not a de Polignac number, because 138451123859 - 2⁴ = 138451123843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138451123829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3711569 + ... + 3748685.

It is an arithmetic number, because the mean of its divisors is an integer number (8875359216).

Almost surely, 2^138451123859 is an apocalyptic number.

138451123859 is a deficient number, since it is larger than the sum of its proper divisors (3554623597).

138451123859 is a wasteful number, since it uses less digits than its factorization.

138451123859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37786.

The product of its digits is 1036800, while the sum is 50.

The spelling of 138451123859 in words is "one hundred thirty-eight billion, four hundred fifty-one million, one hundred twenty-three thousand, eight hundred fifty-nine".