501601060091 has 8 divisors (see below), whose sum is σ = 520812408000. Its totient is φ = 482517362880.

The previous prime is 501601060001. The next prime is 501601060109. The reversal of 501601060091 is 190060106105.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-501601060091 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (501601060001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31904666 + ... + 31920383.

It is an arithmetic number, because the mean of its divisors is an integer number (65101551000).

Almost surely, 2^501601060091 is an apocalyptic number.

501601060091 is a deficient number, since it is larger than the sum of its proper divisors (19211347909).

501601060091 is a wasteful number, since it uses less digits than its factorization.

501601060091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63825349.

The product of its (nonzero) digits is 1620, while the sum is 29.

Adding to 501601060091 its reverse (190060106105), we get a palindrome (691661166196).

The spelling of 501601060091 in words is "five hundred one billion, six hundred one million, sixty thousand, ninety-one".