42640462636 has 24 divisors (see below), whose sum is σ = 79016726880. Its totient is φ = 20064460032.

The previous prime is 42640462609. The next prime is 42640462717. The reversal of 42640462636 is 63626404624.

It is a super-2 number, since 2×42640462636² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 42640462592 and 42640462601.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1356910 + ... + 1387978.

It is an arithmetic number, because the mean of its divisors is an integer number (3292363620).

Almost surely, 2^42640462636 is an apocalyptic number.

It is an amenable number.

42640462636 is a deficient number, since it is larger than the sum of its proper divisors (36376264244).

42640462636 is a wasteful number, since it uses less digits than its factorization.

42640462636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51273 (or 51271 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 43.

The spelling of 42640462636 in words is "forty-two billion, six hundred forty million, four hundred sixty-two thousand, six hundred thirty-six".