40350664544 has 48 divisors (see below), whose sum is σ = 81277985376. Its totient is φ = 19713024000.

The previous prime is 40350664499. The next prime is 40350664559. The reversal of 40350664544 is 44546605304.

It is a super-2 number, since 2×40350664544² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226304 + ... + 363200.

It is an arithmetic number, because the mean of its divisors is an integer number (1693291362).

Almost surely, 2^40350664544 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 40350664544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40638992688).

40350664544 is an abundant number, since it is smaller than the sum of its proper divisors (40927320832).

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

40350664544 is a wasteful number, since it uses less digits than its factorization.

40350664544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137119 (or 137111 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 41.

The spelling of 40350664544 in words is "forty billion, three hundred fifty million, six hundred sixty-four thousand, five hundred forty-four".