40718777838 has 8 divisors (see below), whose sum is σ = 81437555688. Its totient is φ = 13572925944.

The previous prime is 40718777819. The next prime is 40718777867. The reversal of 40718777838 is 83877781704.

It is a sphenic number, since it is the product of 3 distinct primes.

40718777838 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3393231481 + ... + 3393231492.

It is an arithmetic number, because the mean of its divisors is an integer number (10179694461).

Almost surely, 2^40718777838 is an apocalyptic number.

40718777838 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40718777838 is a wasteful number, since it uses less digits than its factorization.

40718777838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6786462978.

The product of its (nonzero) digits is 14751744, while the sum is 60.

The spelling of 40718777838 in words is "forty billion, seven hundred eighteen million, seven hundred seventy-seven thousand, eight hundred thirty-eight".