154650421034440 has 128 divisors (see below), whose sum is σ = 358275179520000. Its totient is φ = 60055041835008.

The previous prime is 154650421034419. The next prime is 154650421034533. The reversal of 154650421034440 is 44430124056451.

It is a super-2 number, since 2×154650421034440² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 249914536 + ... + 250532584.

It is an arithmetic number, because the mean of its divisors is an integer number (2799024840000).

Almost surely, 2^{154650421034440} is an apocalyptic number.

154650421034440 is a gapful number since it is divisible by the number (10) 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 154650421034440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179137589760000).

154650421034440 is an abundant number, since it is smaller than the sum of its proper divisors (203624758485560).

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

154650421034440 is a wasteful number, since it uses less digits than its factorization.

154650421034440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619479 (or 619475 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 43.

The spelling of 154650421034440 in words is "one hundred fifty-four trillion, six hundred fifty billion, four hundred twenty-one million, thirty-four thousand, four hundred forty".