40061811 has 16 divisors (see below), whose sum is σ = 54639360. Its totient is φ = 26101920.

The previous prime is 40061807. The next prime is 40061831. The reversal of 40061811 is 11816004.

It is not a de Polignac number, because 40061811 - 2² = 40061807 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40061831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32146 + ... + 33368.

It is an arithmetic number, because the mean of its divisors is an integer number (3414960).

Almost surely, 2^40061811 is an apocalyptic number.

40061811 is a deficient number, since it is larger than the sum of its proper divisors (14577549).

40061811 is a wasteful number, since it uses less digits than its factorization.

40061811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1466.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 40061811 is about 6329.4400226244. The cubic root of 40061811 is about 342.1712575473.

Adding to 40061811 its reverse (11816004), we get a palindrome (51877815).

The spelling of 40061811 in words is "forty million, sixty-one thousand, eight hundred eleven".