40921628740 has 72 divisors (see below), whose sum is σ = 89450861976. Its totient is φ = 15723993600.

The previous prime is 40921628719. The next prime is 40921628767. The reversal of 40921628740 is 4782612904.

It can be written as a sum of positive squares in 4 ways, for example, as 9939292416 + 30982336324 = 99696^2 + 176018^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2625370 + ... + 2640910.

It is an arithmetic number, because the mean of its divisors is an integer number (1242373083).

Almost surely, 2^40921628740 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 40921628740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44725430988).

40921628740 is an abundant number, since it is smaller than the sum of its proper divisors (48529233236).

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

40921628740 is a wasteful number, since it uses less digits than its factorization.

40921628740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15749 (or 15716 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 40921628740 in words is "forty billion, nine hundred twenty-one million, six hundred twenty-eight thousand, seven hundred forty".