2261624531545 has 8 divisors (see below), whose sum is σ = 2713980140424. Its totient is φ = 1809279156864.

The previous prime is 2261624531527. The next prime is 2261624531549. The reversal of 2261624531545 is 5451354261622.

It can be written as a sum of positive squares in 4 ways, for example, as 751763563849 + 1509860967696 = 867043^2 + 1228764^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2261624531545 - 2⁴¹ = 62601275993 is a prime.

It is a super-2 number, since 2×2261624531545² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2261624531495 and 2261624531504.

It is not an unprimeable number, because it can be changed into a prime (2261624531549) 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, 2063674 + ... + 2963443.

It is an arithmetic number, because the mean of its divisors is an integer number (339247517553).

Almost surely, 2^{2261624531545} is an apocalyptic number.

It is an amenable number.

2261624531545 is a deficient number, since it is larger than the sum of its proper divisors (452355608879).

2261624531545 is an equidigital number, since it uses as much as digits as its factorization.

2261624531545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5117099.

The product of its digits is 1728000, while the sum is 46.

The spelling of 2261624531545 in words is "two trillion, two hundred sixty-one billion, six hundred twenty-four million, five hundred thirty-one thousand, five hundred forty-five".