40581126477 has 24 divisors (see below), whose sum is σ = 59626176480. Its totient is φ = 26588633760.

The previous prime is 40581126463. The next prime is 40581126503. The reversal of 40581126477 is 77462118504.

40581126477 is a `hidden beast` number, since 4 + 0 + 58 + 1 + 126 + 477 = 666.

It is not a de Polignac number, because 40581126477 - 2⁶ = 40581126413 is a prime.

It is a super-2 number, since 2×40581126477² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40581126577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2768227 + ... + 2782847.

It is an arithmetic number, because the mean of its divisors is an integer number (2484424020).

Almost surely, 2^40581126477 is an apocalyptic number.

It is an amenable number.

40581126477 is a deficient number, since it is larger than the sum of its proper divisors (19045050003).

40581126477 is a wasteful number, since it uses less digits than its factorization.

40581126477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19913 (or 19910 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The spelling of 40581126477 in words is "forty billion, five hundred eighty-one million, one hundred twenty-six thousand, four hundred seventy-seven".