40573731660 has 288 divisors, whose sum is σ = 146002590720. Its totient is φ = 8323660800.

The previous prime is 40573731623. The next prime is 40573731661. The reversal of 40573731660 is 6613737504.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (40573731661) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2546920 + ... + 2562800.

It is an arithmetic number, because the mean of its divisors is an integer number (506953440).

Almost surely, 2^40573731660 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 40573731660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73001295360).

40573731660 is an abundant number, since it is smaller than the sum of its proper divisors (105428859060).

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

40573731660 is a wasteful number, since it uses less digits than its factorization.

40573731660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15997 (or 15988 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 42.

The spelling of 40573731660 in words is "forty billion, five hundred seventy-three million, seven hundred thirty-one thousand, six hundred sixty".