40811131811720 has 32 divisors (see below), whose sum is σ = 96657943766400. Its totient is φ = 15465271002048.

The previous prime is 40811131811707. The next prime is 40811131811741. The reversal of 40811131811720 is 2711813111804.

It is a Harshad number since it is a multiple of its sum of digits (38).

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, 26849428064 + ... + 26849429583.

It is an arithmetic number, because the mean of its divisors is an integer number (3020560742700).

Almost surely, 2^{40811131811720} is an apocalyptic number.

40811131811720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40811131811720 is an abundant number, since it is smaller than the sum of its proper divisors (55846811954680).

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

40811131811720 is a wasteful number, since it uses less digits than its factorization.

40811131811720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53698857677 (or 53698857673 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 38.

The spelling of 40811131811720 in words is "forty trillion, eight hundred eleven billion, one hundred thirty-one million, eight hundred eleven thousand, seven hundred twenty".