40518794862 has 128 divisors (see below), whose sum is σ = 112067020800. Its totient is φ = 10566091008.

The previous prime is 40518794843. The next prime is 40518794881. The reversal of 40518794862 is 26849781504.

It is a happy number.

40518794862 is a `hidden beast` number, since 40 + 51 + 8 + 79 + 486 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (40518794843) and next prime (40518794881).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 40518794799 and 40518794808.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 391023 + ... + 483669.

It is an arithmetic number, because the mean of its divisors is an integer number (875523600).

Almost surely, 2^40518794862 is an apocalyptic number.

40518794862 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 40518794862, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56033510400).

40518794862 is an abundant number, since it is smaller than the sum of its proper divisors (71548225938).

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

40518794862 is a wasteful number, since it uses less digits than its factorization.

40518794862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92767 (or 92761 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 40518794862 in words is "forty billion, five hundred eighteen million, seven hundred ninety-four thousand, eight hundred sixty-two".