145168138722 has 16 divisors (see below), whose sum is σ = 292905626400. Its totient is φ = 47961154752.

The previous prime is 145168138721. The next prime is 145168138727. The reversal of 145168138722 is 227831861541.

It is not an unprimeable number, because it can be changed into a prime (145168138721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107055472 + ... + 107056827.

It is an arithmetic number, because the mean of its divisors is an integer number (18306601650).

Almost surely, 2^145168138722 is an apocalyptic number.

145168138722 is an abundant number, since it is smaller than the sum of its proper divisors (147737487678).

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

145168138722 is a wasteful number, since it uses less digits than its factorization.

145168138722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214112417.

The product of its digits is 645120, while the sum is 48.

The spelling of 145168138722 in words is "one hundred forty-five billion, one hundred sixty-eight million, one hundred thirty-eight thousand, seven hundred twenty-two".