40128738453 has 12 divisors (see below), whose sum is σ = 58095774880. Its totient is φ = 26691550056.

The previous prime is 40128738401. The next prime is 40128738499. The reversal of 40128738453 is 35483782104.

40128738453 is a `hidden beast` number, since 4 + 0 + 128 + 73 + 8 + 453 = 666.

It is not a de Polignac number, because 40128738453 - 2¹⁴ = 40128722069 is a prime.

It is a super-2 number, since 2×40128738453² (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 = 40128738399 and 40128738408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40128238453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5074351 + ... + 5082252.

Almost surely, 2^40128738453 is an apocalyptic number.

It is an amenable number.

40128738453 is a deficient number, since it is larger than the sum of its proper divisors (17967036427).

40128738453 is a wasteful number, since it uses less digits than its factorization.

40128738453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10157048 (or 10157045 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 40128738453 in words is "forty billion, one hundred twenty-eight million, seven hundred thirty-eight thousand, four hundred fifty-three".