61013322331015 has 4 divisors (see below), whose sum is σ = 73215986797224. Its totient is φ = 48810657864808.

The previous prime is 61013322330967. The next prime is 61013322331037. The reversal of 61013322331015 is 51013322331016.

It is a happy number.

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 61013322331015 - 2⁴¹ = 58814299075463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6101332233097 + ... + 6101332233106.

It is an arithmetic number, because the mean of its divisors is an integer number (18303996699306).

Almost surely, 2^{61013322331015} is an apocalyptic number.

61013322331015 is a deficient number, since it is larger than the sum of its proper divisors (12202664466209).

61013322331015 is a wasteful number, since it uses less digits than its factorization.

61013322331015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12202664466208.

The product of its (nonzero) digits is 9720, while the sum is 31.

Subtracting from 61013322331015 its reverse (51013322331016), we obtain a palindrome (9999999999999).

The spelling of 61013322331015 in words is "sixty-one trillion, thirteen billion, three hundred twenty-two million, three hundred thirty-one thousand, fifteen".