45519460821 has 12 divisors (see below), whose sum is σ = 65774355660. Its totient is φ = 30335219520.

The previous prime is 45519460817. The next prime is 45519460891. The reversal of 45519460821 is 12806491554.

45519460821 is a `hidden beast` number, since 4 + 5 + 5 + 19 + 4 + 608 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8468600625 + 37050860196 = 92025^2 + 192486^2 .

It is not a de Polignac number, because 45519460821 - 2² = 45519460817 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45519460891) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 897936 + ... + 947273.

It is an arithmetic number, because the mean of its divisors is an integer number (5481196305).

Almost surely, 2^45519460821 is an apocalyptic number.

It is an amenable number.

45519460821 is a deficient number, since it is larger than the sum of its proper divisors (20254894839).

45519460821 is a wasteful number, since it uses less digits than its factorization.

45519460821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1847956 (or 1847953 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 45519460821 in words is "forty-five billion, five hundred nineteen million, four hundred sixty thousand, eight hundred twenty-one".