61412444662553 has 4 divisors (see below), whose sum is σ = 61512628096548. Its totient is φ = 61312261228560.

The previous prime is 61412444662537. The next prime is 61412444662781. The reversal of 61412444662553 is 35526644421416.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3272017912384 + 58140426750169 = 1808872^2 + 7624987^2 .

It is a cyclic number.

It is not a de Polignac number, because 61412444662553 - 2⁴ = 61412444662537 is a prime.

It is a super-2 number, since 2×61412444662553² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 61412444662495 and 61412444662504.

It is not an unprimeable number, because it can be changed into a prime (61412744662553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50091716078 + ... + 50091717303.

It is an arithmetic number, because the mean of its divisors is an integer number (15378157024137).

Almost surely, 2^{61412444662553} is an apocalyptic number.

It is an amenable number.

61412444662553 is a deficient number, since it is larger than the sum of its proper divisors (100183433995).

61412444662553 is a wasteful number, since it uses less digits than its factorization.

61412444662553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100183433994.

The product of its digits is 16588800, while the sum is 53.

The spelling of 61412444662553 in words is "sixty-one trillion, four hundred twelve billion, four hundred forty-four million, six hundred sixty-two thousand, five hundred fifty-three".