40050420136 has 8 divisors (see below), whose sum is σ = 75094537770. Its totient is φ = 20025210064.

The previous prime is 40050420133. The next prime is 40050420239. The reversal of 40050420136 is 63102405004.

It can be written as a sum of positive squares in only one way, i.e., 40042411236 + 8008900 = 200106^2 + 2830^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×40050420136² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40050420136.

It is not an unprimeable number, because it can be changed into a prime (40050420133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2503151251 + ... + 2503151266.

Almost surely, 2^40050420136 is an apocalyptic number.

It is an amenable number.

40050420136 is a deficient number, since it is larger than the sum of its proper divisors (35044117634).

40050420136 is a wasteful number, since it uses less digits than its factorization.

40050420136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5006302523 (or 5006302519 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The spelling of 40050420136 in words is "forty billion, fifty million, four hundred twenty thousand, one hundred thirty-six".