2153214321340 has 24 divisors (see below), whose sum is σ = 4521782466432. Its totient is φ = 861279558720.

The previous prime is 2153214321319. The next prime is 2153214321341. The reversal of 2153214321340 is 431234123512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153214321341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3366645 + ... + 3954835.

It is an arithmetic number, because the mean of its divisors is an integer number (188407602768).

Almost surely, 2^{2153214321340} is an apocalyptic number.

2153214321340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2153214321340 is an abundant number, since it is smaller than the sum of its proper divisors (2368568145092).

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

2153214321340 is a wasteful number, since it uses less digits than its factorization.

2153214321340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771237 (or 771235 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 2153214321340 its reverse (431234123512), we get a palindrome (2584448444852).

The spelling of 2153214321340 in words is "two trillion, one hundred fifty-three billion, two hundred fourteen million, three hundred twenty-one thousand, three hundred forty".