42563626501 has 4 divisors (see below), whose sum is σ = 46433047104. Its totient is φ = 38694205900.

The previous prime is 42563626489. The next prime is 42563626561. The reversal of 42563626501 is 10562636524.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42563626501 - 2¹⁹ = 42563102213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42563626561) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1934710285 + ... + 1934710306.

It is an arithmetic number, because the mean of its divisors is an integer number (11608261776).

Almost surely, 2^42563626501 is an apocalyptic number.

It is an amenable number.

42563626501 is a deficient number, since it is larger than the sum of its proper divisors (3869420603).

42563626501 is a wasteful number, since it uses less digits than its factorization.

42563626501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3869420602.

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 42563626501 in words is "forty-two billion, five hundred sixty-three million, six hundred twenty-six thousand, five hundred one".