42506604406461 has 24 divisors (see below), whose sum is σ = 61811996463840. Its totient is φ = 25969723955136.

The previous prime is 42506604406447. The next prime is 42506604406463. The reversal of 42506604406461 is 16460440660524.

It is not a de Polignac number, because 42506604406461 - 2⁷ = 42506604406333 is a prime.

It is a super-2 number, since 2×42506604406461² (a number of 28 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 42506604406461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42506604406463) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 301510306 + ... + 301651251.

It is an arithmetic number, because the mean of its divisors is an integer number (2575499852660).

Almost surely, 2^{42506604406461} is an apocalyptic number.

It is an amenable number.

42506604406461 is a deficient number, since it is larger than the sum of its proper divisors (19305392057379).

42506604406461 is a wasteful number, since it uses less digits than its factorization.

42506604406461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603161725 (or 603161712 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 48.

The spelling of 42506604406461 in words is "forty-two trillion, five hundred six billion, six hundred four million, four hundred six thousand, four hundred sixty-one".