501226421045 has 16 divisors (see below), whose sum is σ = 687471079680. Its totient is φ = 343660694784.

The previous prime is 501226420997. The next prime is 501226421051. The reversal of 501226421045 is 540124622105.

It is a cyclic number.

It is not a de Polignac number, because 501226421045 - 2²² = 501222226741 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 451652 + ... + 1098381.

It is an arithmetic number, because the mean of its divisors is an integer number (42966942480).

Almost surely, 2^501226421045 is an apocalyptic number.

It is an amenable number.

501226421045 is a deficient number, since it is larger than the sum of its proper divisors (186244658635).

501226421045 is a wasteful number, since it uses less digits than its factorization.

501226421045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1559284.

The product of its (nonzero) digits is 19200, while the sum is 32.

The spelling of 501226421045 in words is "five hundred one billion, two hundred twenty-six million, four hundred twenty-one thousand, forty-five".