45402400021 has 16 divisors (see below), whose sum is σ = 53432923968. Its totient is φ = 38114003200.

The previous prime is 45402399929. The next prime is 45402400027. The reversal of 45402400021 is 12000420454.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 45402400021 - 2²⁹ = 44865529109 is a prime.

It is a super-2 number, since 2×45402400021² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45402399965 and 45402400001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45402400027) 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, 2280595 + ... + 2300416.

It is an arithmetic number, because the mean of its divisors is an integer number (3339557748).

Almost surely, 2^45402400021 is an apocalyptic number.

It is an amenable number.

45402400021 is a deficient number, since it is larger than the sum of its proper divisors (8030523947).

45402400021 is a wasteful number, since it uses less digits than its factorization.

45402400021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4581092.

The product of its (nonzero) digits is 1280, while the sum is 22.

Adding to 45402400021 its reverse (12000420454), we get a palindrome (57402820475).

The spelling of 45402400021 in words is "forty-five billion, four hundred two million, four hundred thousand, twenty-one".