40513612890 has 64 divisors (see below), whose sum is σ = 101529096192. Its totient is φ = 10326888000.

The previous prime is 40513612831. The next prime is 40513612891. The reversal of 40513612890 is 9821631504.

It is not an unprimeable number, because it can be changed into a prime (40513612891) by changing a digit.

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, 1037215 + ... + 1075565.

It is an arithmetic number, because the mean of its divisors is an integer number (1586392128).

Almost surely, 2^40513612890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40513612890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50764548096).

40513612890 is an abundant number, since it is smaller than the sum of its proper divisors (61015483302).

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

40513612890 is a wasteful number, since it uses less digits than its factorization.

40513612890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39915.

The product of its (nonzero) digits is 51840, while the sum is 39.

The spelling of 40513612890 in words is "forty billion, five hundred thirteen million, six hundred twelve thousand, eight hundred ninety".