61454432413 has 4 divisors (see below), whose sum is σ = 67041199008. Its totient is φ = 55867665820.

The previous prime is 61454432339. The next prime is 61454432419. The reversal of 61454432413 is 31423445416.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61454432413 - 2¹³ = 61454424221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61454432419) 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, 2793383281 + ... + 2793383302.

It is an arithmetic number, because the mean of its divisors is an integer number (16760299752).

Almost surely, 2^61454432413 is an apocalyptic number.

It is an amenable number.

61454432413 is a deficient number, since it is larger than the sum of its proper divisors (5586766595).

61454432413 is a wasteful number, since it uses less digits than its factorization.

61454432413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5586766594.

The product of its digits is 138240, while the sum is 37.

Adding to 61454432413 its reverse (31423445416), we get a palindrome (92877877829).

The spelling of 61454432413 in words is "sixty-one billion, four hundred fifty-four million, four hundred thirty-two thousand, four hundred thirteen".