61323451013 has 16 divisors (see below), whose sum is σ = 67447412736. Its totient is φ = 55291299840.

The previous prime is 61323451001. The next prime is 61323451043. The reversal of 61323451013 is 31015432316.

It is a cyclic number.

It is not a de Polignac number, because 61323451013 - 2²⁰ = 61322402437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61323451043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5964245 + ... + 5974517.

It is an arithmetic number, because the mean of its divisors is an integer number (4215463296).

Almost surely, 2^61323451013 is an apocalyptic number.

It is an amenable number.

61323451013 is a deficient number, since it is larger than the sum of its proper divisors (6123961723).

61323451013 is a wasteful number, since it uses less digits than its factorization.

61323451013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14684.

The product of its (nonzero) digits is 6480, while the sum is 29.

Adding to 61323451013 its reverse (31015432316), we get a palindrome (92338883329).

The spelling of 61323451013 in words is "sixty-one billion, three hundred twenty-three million, four hundred fifty-one thousand, thirteen".