45199650921 has 16 divisors (see below), whose sum is σ = 60385726464. Its totient is φ = 30073380624.

The previous prime is 45199650913. The next prime is 45199650929. The reversal of 45199650921 is 12905699154.

It is an interprime number because it is at equal distance from previous prime (45199650913) and next prime (45199650929).

It is not a de Polignac number, because 45199650921 - 2³ = 45199650913 is a prime.

It is a super-2 number, since 2×45199650921² (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 (45199650929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7186240 + ... + 7192526.

It is an arithmetic number, because the mean of its divisors is an integer number (3774107904).

Almost surely, 2^45199650921 is an apocalyptic number.

It is an amenable number.

45199650921 is a deficient number, since it is larger than the sum of its proper divisors (15186075543).

45199650921 is a wasteful number, since it uses less digits than its factorization.

45199650921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10660.

The product of its (nonzero) digits is 874800, while the sum is 51.

The spelling of 45199650921 in words is "forty-five billion, one hundred ninety-nine million, six hundred fifty thousand, nine hundred twenty-one".