61464455633 has 4 divisors (see below), whose sum is σ = 70245092160. Its totient is φ = 52683819108.

The previous prime is 61464455627. The next prime is 61464455699. The reversal of 61464455633 is 33655446416.

61464455633 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61464455633 - 2³⁰ = 60390713809 is a prime.

It is a super-2 number, since 2×61464455633² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61464455933) 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, 4390318253 + ... + 4390318266.

It is an arithmetic number, because the mean of its divisors is an integer number (17561273040).

Almost surely, 2^61464455633 is an apocalyptic number.

It is an amenable number.

61464455633 is a deficient number, since it is larger than the sum of its proper divisors (8780636527).

61464455633 is an equidigital number, since it uses as much as digits as its factorization.

61464455633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8780636526.

The product of its digits is 3110400, while the sum is 47.

The spelling of 61464455633 in words is "sixty-one billion, four hundred sixty-four million, four hundred fifty-five thousand, six hundred thirty-three".