40537813206 has 64 divisors (see below), whose sum is σ = 91382353920. Its totient is φ = 11881931040.

The previous prime is 40537813193. The next prime is 40537813231. The reversal of 40537813206 is 60231873504.

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, 222975 + ... + 361653.

It is an arithmetic number, because the mean of its divisors is an integer number (1427849280).

Almost surely, 2^40537813206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40537813206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45691176960).

40537813206 is an abundant number, since it is smaller than the sum of its proper divisors (50844540714).

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

40537813206 is a wasteful number, since it uses less digits than its factorization.

40537813206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138841.

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 40537813206 in words is "forty billion, five hundred thirty-seven million, eight hundred thirteen thousand, two hundred six".