45646505621 has 4 divisors (see below), whose sum is σ = 45656175072. Its totient is φ = 45636836172.

The previous prime is 45646505587. The next prime is 45646505627. The reversal of 45646505621 is 12650564654.

45646505621 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 45646505621 - 2²² = 45642311317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45646505627) 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, 4827641 + ... + 4837086.

It is an arithmetic number, because the mean of its divisors is an integer number (11414043768).

Almost surely, 2^45646505621 is an apocalyptic number.

It is an amenable number.

45646505621 is a deficient number, since it is larger than the sum of its proper divisors (9669451).

45646505621 is an equidigital number, since it uses as much as digits as its factorization.

45646505621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9669450.

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 45646505621 in words is "forty-five billion, six hundred forty-six million, five hundred five thousand, six hundred twenty-one".