45065742121 has 4 divisors (see below), whose sum is σ = 45112346752. Its totient is φ = 45019137492.

The previous prime is 45065742107. The next prime is 45065742143. The reversal of 45065742121 is 12124756054.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12124756054 = 2 ⋅6062378027.

It is a cyclic number.

It is not a de Polignac number, because 45065742121 - 2³¹ = 42918258473 is a prime.

It is a super-2 number, since 2×45065742121² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45065742521) 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 3 ways as a sum of consecutive naturals, for example, 23300865 + ... + 23302798.

It is an arithmetic number, because the mean of its divisors is an integer number (11278086688).

Almost surely, 2^45065742121 is an apocalyptic number.

It is an amenable number.

45065742121 is a deficient number, since it is larger than the sum of its proper divisors (46604631).

45065742121 is an equidigital number, since it uses as much as digits as its factorization.

45065742121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46604630.

The product of its (nonzero) digits is 67200, while the sum is 37.

The spelling of 45065742121 in words is "forty-five billion, sixty-five million, seven hundred forty-two thousand, one hundred twenty-one".