61633225645 has 8 divisors (see below), whose sum is σ = 74020352256. Its totient is φ = 49266259536.

The previous prime is 61633225613. The next prime is 61633225651. The reversal of 61633225645 is 54652233616.

61633225645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 61633225645 - 2⁵ = 61633225613 is a prime.

It is a super-3 number, since 3×61633225645³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5033397 + ... + 5045626.

It is an arithmetic number, because the mean of its divisors is an integer number (9252544032).

Almost surely, 2^61633225645 is an apocalyptic number.

It is an amenable number.

61633225645 is a deficient number, since it is larger than the sum of its proper divisors (12387126611).

61633225645 is a wasteful number, since it uses less digits than its factorization.

61633225645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10080251.

The product of its digits is 777600, while the sum is 43.

The spelling of 61633225645 in words is "sixty-one billion, six hundred thirty-three million, two hundred twenty-five thousand, six hundred forty-five".