138446549258 has 16 divisors (see below), whose sum is σ = 217388136960. Its totient is φ = 66046738800.

The previous prime is 138446549233. The next prime is 138446549309. The reversal of 138446549258 is 852945644831.

It is a junction number, because it is equal to n+sod(n) for n = 138446549197 and 138446549206.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15721013 + ... + 15729816.

It is an arithmetic number, because the mean of its divisors is an integer number (13586758560).

Almost surely, 2^138446549258 is an apocalyptic number.

138446549258 is a deficient number, since it is larger than the sum of its proper divisors (78941587702).

138446549258 is a wasteful number, since it uses less digits than its factorization.

138446549258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31450933.

The product of its digits is 33177600, while the sum is 59.

The spelling of 138446549258 in words is "one hundred thirty-eight billion, four hundred forty-six million, five hundred forty-nine thousand, two hundred fifty-eight".