154283971512 has 256 divisors, whose sum is σ = 456491635200. Its totient is φ = 42930913280.

The previous prime is 154283971489. The next prime is 154283971559. The reversal of 154283971512 is 215179382451.

It is a happy number.

It is a super-2 number, since 2×154283971512² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 36274378 + ... + 36278630.

It is an arithmetic number, because the mean of its divisors is an integer number (1783170450).

Almost surely, 2^154283971512 is an apocalyptic number.

154283971512 is a gapful number since it is divisible by the number (12) 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 154283971512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228245817600).

154283971512 is an abundant number, since it is smaller than the sum of its proper divisors (302207663688).

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

154283971512 is a wasteful number, since it uses less digits than its factorization.

154283971512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4486 (or 4482 counting only the distinct ones).

The product of its digits is 604800, while the sum is 48.

The spelling of 154283971512 in words is "one hundred fifty-four billion, two hundred eighty-three million, nine hundred seventy-one thousand, five hundred twelve".