2251401545365 has 16 divisors (see below), whose sum is σ = 3087947790720. Its totient is φ = 1543662509760.

The previous prime is 2251401545303. The next prime is 2251401545387. The reversal of 2251401545365 is 5635451041522.

It is not a de Polignac number, because 2251401545365 - 2³³ = 2242811610773 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2891050 + ... + 3586219.

It is an arithmetic number, because the mean of its divisors is an integer number (192996736920).

Almost surely, 2^{2251401545365} is an apocalyptic number.

It is an amenable number.

2251401545365 is a deficient number, since it is larger than the sum of its proper divisors (836546245355).

2251401545365 is an equidigital number, since it uses as much as digits as its factorization.

2251401545365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6487212.

The product of its (nonzero) digits is 720000, while the sum is 43.

Adding to 2251401545365 its reverse (5635451041522), we get a palindrome (7886852586887).

The spelling of 2251401545365 in words is "two trillion, two hundred fifty-one billion, four hundred one million, five hundred forty-five thousand, three hundred sixty-five".