40128745134 has 8 divisors (see below), whose sum is σ = 80257490280. Its totient is φ = 13376248376.

The previous prime is 40128745109. The next prime is 40128745147. The reversal of 40128745134 is 43154782104.

It is a sphenic number, since it is the product of 3 distinct primes.

40128745134 is an admirable number.

It is a super-2 number, since 2×40128745134² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40128745092 and 40128745101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3344062089 + ... + 3344062100.

It is an arithmetic number, because the mean of its divisors is an integer number (10032186285).

Almost surely, 2^40128745134 is an apocalyptic number.

40128745134 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40128745134 is a wasteful number, since it uses less digits than its factorization.

40128745134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6688124194.

The product of its (nonzero) digits is 107520, while the sum is 39.

The spelling of 40128745134 in words is "forty billion, one hundred twenty-eight million, seven hundred forty-five thousand, one hundred thirty-four".