40609442090 has 32 divisors (see below), whose sum is σ = 85482207360. Its totient is φ = 13599440064.

The previous prime is 40609442051. The next prime is 40609442113. The reversal of 40609442090 is 9024490604.

It is a super-2 number, since 2×40609442090² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6742745 + ... + 6748764.

It is an arithmetic number, because the mean of its divisors is an integer number (2671318980).

Almost surely, 2^40609442090 is an apocalyptic number.

40609442090 is an abundant number, since it is smaller than the sum of its proper divisors (44872765270).

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

40609442090 is a wasteful number, since it uses less digits than its factorization.

40609442090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13491566.

The product of its (nonzero) digits is 62208, while the sum is 38.

The spelling of 40609442090 in words is "forty billion, six hundred nine million, four hundred forty-two thousand, ninety".