15901322313011 has 4 divisors (see below), whose sum is σ = 15901385413872. Its totient is φ = 15901259212152.

The previous prime is 15901322313007. The next prime is 15901322313089. The reversal of 15901322313011 is 11031322310951.

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

It is a cyclic number.

It is not a de Polignac number, because 15901322313011 - 2² = 15901322313007 is a prime.

It is a super-2 number, since 2×15901322313011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15901322310011) 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, 31170911 + ... + 31676936.

It is an arithmetic number, because the mean of its divisors is an integer number (3975346353468).

Almost surely, 2^{15901322313011} is an apocalyptic number.

15901322313011 is a deficient number, since it is larger than the sum of its proper divisors (63100861).

15901322313011 is an equidigital number, since it uses as much as digits as its factorization.

15901322313011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63100860.

The product of its (nonzero) digits is 4860, while the sum is 32.

Adding to 15901322313011 its reverse (11031322310951), we get a palindrome (26932644623962).

The spelling of 15901322313011 in words is "fifteen trillion, nine hundred one billion, three hundred twenty-two million, three hundred thirteen thousand, eleven".