45651321137 has 16 divisors (see below), whose sum is σ = 47117745360. Its totient is φ = 44202624000.

The previous prime is 45651321113. The next prime is 45651321139. The reversal of 45651321137 is 73112315654.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 8325467536 + 37325853601 = 91244^2 + 193199^2 .

It is a cyclic number.

It is not a de Polignac number, because 45651321137 - 2¹⁸ = 45651058993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45651321137.

It is not an unprimeable number, because it can be changed into a prime (45651321139) 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, 4257539 + ... + 4268247.

It is an arithmetic number, because the mean of its divisors is an integer number (2944859085).

Almost surely, 2^45651321137 is an apocalyptic number.

It is an amenable number.

45651321137 is a deficient number, since it is larger than the sum of its proper divisors (1466424223).

45651321137 is a wasteful number, since it uses less digits than its factorization.

45651321137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11524.

The product of its digits is 75600, while the sum is 38.

The spelling of 45651321137 in words is "forty-five billion, six hundred fifty-one million, three hundred twenty-one thousand, one hundred thirty-seven".