40290040164 has 96 divisors (see below), whose sum is σ = 104417470080. Its totient is φ = 11989555200.

The previous prime is 40290040099. The next prime is 40290040177. The reversal of 40290040164 is 46104009204.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1613454 + ... + 1638234.

It is an arithmetic number, because the mean of its divisors is an integer number (1087681980).

Almost surely, 2^40290040164 is an apocalyptic number.

40290040164 is a gapful number since it is divisible by the number (44) 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 40290040164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52208735040).

40290040164 is an abundant number, since it is smaller than the sum of its proper divisors (64127429916).

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

40290040164 is a wasteful number, since it uses less digits than its factorization.

40290040164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25021 (or 25019 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

Adding to 40290040164 its reverse (46104009204), we get a palindrome (86394049368).

The spelling of 40290040164 in words is "forty billion, two hundred ninety million, forty thousand, one hundred sixty-four".