40161719738 has 16 divisors (see below), whose sum is σ = 69072932544. Its totient is φ = 17156098080.

The previous prime is 40161719701. The next prime is 40161719747. The reversal of 40161719738 is 83791716104.

It is a super-2 number, since 2×40161719738² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40161719692 and 40161719701.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4667843 + ... + 4676438.

It is an arithmetic number, because the mean of its divisors is an integer number (4317058284).

Almost surely, 2^40161719738 is an apocalyptic number.

40161719738 is a deficient number, since it is larger than the sum of its proper divisors (28911212806).

40161719738 is a wasteful number, since it uses less digits than its factorization.

40161719738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9344597.

The product of its (nonzero) digits is 254016, while the sum is 47.

The spelling of 40161719738 in words is "forty billion, one hundred sixty-one million, seven hundred nineteen thousand, seven hundred thirty-eight".