126563500501 has 4 divisors (see below), whose sum is σ = 126945867904. Its totient is φ = 126181133100.

The previous prime is 126563500499. The next prime is 126563500517. The reversal of 126563500501 is 105005365621.

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 126563500501 - 2¹ = 126563500499 is a prime.

It is a super-3 number, since 3×126563500501³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126563500601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191183205 + ... + 191183866.

It is an arithmetic number, because the mean of its divisors is an integer number (31736466976).

Almost surely, 2^126563500501 is an apocalyptic number.

It is an amenable number.

126563500501 is a deficient number, since it is larger than the sum of its proper divisors (382367403).

126563500501 is an equidigital number, since it uses as much as digits as its factorization.

126563500501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382367402.

The product of its (nonzero) digits is 27000, while the sum is 34.

The spelling of 126563500501 in words is "one hundred twenty-six billion, five hundred sixty-three million, five hundred thousand, five hundred one".