40128162040 has 128 divisors (see below), whose sum is σ = 101352384000. Its totient is φ = 14224343040.

The previous prime is 40128162017. The next prime is 40128162079. The reversal of 40128162040 is 4026182104.

It is a super-2 number, since 2×40128162040² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 754236 + ... + 805684.

It is an arithmetic number, because the mean of its divisors is an integer number (791815500).

Almost surely, 2^40128162040 is an apocalyptic number.

40128162040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40128162040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50676192000).

40128162040 is an abundant number, since it is smaller than the sum of its proper divisors (61224221960).

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

40128162040 is a wasteful number, since it uses less digits than its factorization.

40128162040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51545 (or 51541 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The spelling of 40128162040 in words is "forty billion, one hundred twenty-eight million, one hundred sixty-two thousand, forty".