2151321445355 has 32 divisors (see below), whose sum is σ = 2787518707200. Its totient is φ = 1587927066112.

The previous prime is 2151321445333. The next prime is 2151321445379. The reversal of 2151321445355 is 5535441231512.

It is a cyclic number.

It is not a de Polignac number, because 2151321445355 - 2²² = 2151317251051 is a prime.

It is a super-2 number, since 2×2151321445355² (a number of 25 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, 1202924 + ... + 2397846.

It is an arithmetic number, because the mean of its divisors is an integer number (87109959600).

Almost surely, 2^{2151321445355} is an apocalyptic number.

2151321445355 is a deficient number, since it is larger than the sum of its proper divisors (636197261845).

2151321445355 is a wasteful number, since it uses less digits than its factorization.

2151321445355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195363.

The product of its digits is 360000, while the sum is 41.

Adding to 2151321445355 its reverse (5535441231512), we get a palindrome (7686762676867).

The spelling of 2151321445355 in words is "two trillion, one hundred fifty-one billion, three hundred twenty-one million, four hundred forty-five thousand, three hundred fifty-five".