40721049600 has 864 divisors, whose sum is σ = 169647266880. Its totient is φ = 8434483200.

The previous prime is 40721049547. The next prime is 40721049601. The reversal of 40721049600 is 694012704.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (40721049601) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 130099044 + ... + 130099356.

Almost surely, 2^40721049600 is an apocalyptic number.

40721049600 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40721049600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84823633440).

40721049600 is an abundant number, since it is smaller than the sum of its proper divisors (128926217280).

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

40721049600 is a wasteful number, since it uses less digits than its factorization.

40721049600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377 (or 341 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The spelling of 40721049600 in words is "forty billion, seven hundred twenty-one million, forty-nine thousand, six hundred".