45402919521 has 16 divisors (see below), whose sum is σ = 63689797248. Its totient is φ = 28732233600.

The previous prime is 45402919519. The next prime is 45402919543. The reversal of 45402919521 is 12591920454.

It is not a de Polignac number, because 45402919521 - 2¹ = 45402919519 is a prime.

It is a super-2 number, since 2×45402919521² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45402919591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4983685 + ... + 4992786.

It is an arithmetic number, because the mean of its divisors is an integer number (3980612328).

Almost surely, 2^45402919521 is an apocalyptic number.

45402919521 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

45402919521 is a deficient number, since it is larger than the sum of its proper divisors (18286877727).

45402919521 is a wasteful number, since it uses less digits than its factorization.

45402919521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9976552.

The product of its (nonzero) digits is 129600, while the sum is 42.

The spelling of 45402919521 in words is "forty-five billion, four hundred two million, nine hundred nineteen thousand, five hundred twenty-one".