40042474851 has 4 divisors (see below), whose sum is σ = 53389966472. Its totient is φ = 26694983232.

The previous prime is 40042474811. The next prime is 40042474853. The reversal of 40042474851 is 15847424004.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 40042474851 - 2¹¹ = 40042472803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40042474853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6673745806 + ... + 6673745811.

It is an arithmetic number, because the mean of its divisors is an integer number (13347491618).

Almost surely, 2^40042474851 is an apocalyptic number.

40042474851 is a deficient number, since it is larger than the sum of its proper divisors (13347491621).

40042474851 is a wasteful number, since it uses less digits than its factorization.

40042474851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13347491620.

The product of its (nonzero) digits is 143360, while the sum is 39.

Adding to 40042474851 its reverse (15847424004), we get a palindrome (55889898855).

The spelling of 40042474851 in words is "forty billion, forty-two million, four hundred seventy-four thousand, eight hundred fifty-one".