2154431214320 has 160 divisors (see below), whose sum is σ = 6253751162880. Its totient is φ = 670575697920.

The previous prime is 2154431214263. The next prime is 2154431214373. The reversal of 2154431214320 is 234121344512.

It is a congruent number.

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, 4185824 + ... + 4672256.

It is an arithmetic number, because the mean of its divisors is an integer number (39085944768).

Almost surely, 2^{2154431214320} is an apocalyptic number.

2154431214320 is a gapful number since it is divisible by the number (20) 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 2154431214320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3126875581440).

2154431214320 is an abundant number, since it is smaller than the sum of its proper divisors (4099319948560).

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

2154431214320 is a wasteful number, since it uses less digits than its factorization.

2154431214320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487183 (or 487177 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 2154431214320 its reverse (234121344512), we get a palindrome (2388552558832).

The spelling of 2154431214320 in words is "two trillion, one hundred fifty-four billion, four hundred thirty-one million, two hundred fourteen thousand, three hundred twenty".