149221764468 has 144 divisors (see below), whose sum is σ = 440818560000. Its totient is φ = 42544095552.

The previous prime is 149221764319. The next prime is 149221764493. The reversal of 149221764468 is 864467122941.

149221764468 is a `hidden beast` number, since 1 + 4 + 9 + 2 + 2 + 176 + 4 + 468 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5902078 + ... + 5927306.

It is an arithmetic number, because the mean of its divisors is an integer number (3061240000).

Almost surely, 2^149221764468 is an apocalyptic number.

149221764468 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149221764468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220409280000).

149221764468 is an abundant number, since it is smaller than the sum of its proper divisors (291596795532).

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

149221764468 is a wasteful number, since it uses less digits than its factorization.

149221764468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25739 (or 25720 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 54.

The spelling of 149221764468 in words is "one hundred forty-nine billion, two hundred twenty-one million, seven hundred sixty-four thousand, four hundred sixty-eight".