40131473680 has 80 divisors (see below), whose sum is σ = 97116194880. Its totient is φ = 15403820544.

The previous prime is 40131473653. The next prime is 40131473693. The reversal of 40131473680 is 8637413104.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×40131473680² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 325099 + ... + 431221.

It is an arithmetic number, because the mean of its divisors is an integer number (1213952436).

Almost surely, 2^40131473680 is an apocalyptic number.

40131473680 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 40131473680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48558097440).

40131473680 is an abundant number, since it is smaller than the sum of its proper divisors (56984721200).

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

40131473680 is a wasteful number, since it uses less digits than its factorization.

40131473680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106328 (or 106322 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

Adding to 40131473680 its reverse (8637413104), we get a palindrome (48768886784).

The spelling of 40131473680 in words is "forty billion, one hundred thirty-one million, four hundred seventy-three thousand, six hundred eighty".