154917811216 has 45 divisors (see below), whose sum is σ = 349182713469. Its totient is φ = 66388624512.

The previous prime is 154917811163. The next prime is 154917811249. The reversal of 154917811216 is 612118719451.

It is a happy number.

The square root of 154917811216 is 393596.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 4919619600 + 149998191616 = 70140^2 + 387296^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 11013660 + ... + 11027716.

Almost surely, 2^154917811216 is an apocalyptic number.

154917811216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

154917811216 is the 393596-th square number.

It is an amenable number.

154917811216 is an abundant number, since it is smaller than the sum of its proper divisors (194264902253).

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

154917811216 is an frugal number, since it uses more digits than its factorization.

154917811216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28136 (or 14066 counting only the distinct ones).

The product of its digits is 120960, while the sum is 46.

The spelling of 154917811216 in words is "one hundred fifty-four billion, nine hundred seventeen million, eight hundred eleven thousand, two hundred sixteen".