40657634832 has 80 divisors (see below), whose sum is σ = 108914904000. Its totient is φ = 13053798912.

The previous prime is 40657634821. The next prime is 40657634833. The reversal of 40657634832 is 23843675604.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (40657634833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 548394 + ... + 618102.

It is an arithmetic number, because the mean of its divisors is an integer number (1361436300).

Almost surely, 2^40657634832 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40657634832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54457452000).

40657634832 is an abundant number, since it is smaller than the sum of its proper divisors (68257269168).

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

40657634832 is a wasteful number, since it uses less digits than its factorization.

40657634832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70168 (or 70162 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 48.

The spelling of 40657634832 in words is "forty billion, six hundred fifty-seven million, six hundred thirty-four thousand, eight hundred thirty-two".