501231114651 has 4 divisors (see below), whose sum is σ = 668308152872. Its totient is φ = 334154076432.

The previous prime is 501231114613. The next prime is 501231114661. The reversal of 501231114651 is 156411132105.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 501231114651 - 2²⁶ = 501164005787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (501231114661) 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, 83538519106 + ... + 83538519111.

It is an arithmetic number, because the mean of its divisors is an integer number (167077038218).

Almost surely, 2^501231114651 is an apocalyptic number.

501231114651 is a deficient number, since it is larger than the sum of its proper divisors (167077038221).

501231114651 is a wasteful number, since it uses less digits than its factorization.

501231114651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167077038220.

The product of its (nonzero) digits is 3600, while the sum is 30.

Adding to 501231114651 its reverse (156411132105), we get a palindrome (657642246756).

The spelling of 501231114651 in words is "five hundred one billion, two hundred thirty-one million, one hundred fourteen thousand, six hundred fifty-one".