61530343453 has 8 divisors (see below), whose sum is σ = 62464625280. Its totient is φ = 60599947200.

The previous prime is 61530343423. The next prime is 61530343463. The reversal of 61530343453 is 35434303516.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61530343453 - 2²¹ = 61528246301 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 (61530343423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 939475 + ... + 1002832.

It is an arithmetic number, because the mean of its divisors is an integer number (7808078160).

Almost surely, 2^61530343453 is an apocalyptic number.

It is an amenable number.

61530343453 is a deficient number, since it is larger than the sum of its proper divisors (934281827).

61530343453 is a wasteful number, since it uses less digits than its factorization.

61530343453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1942787.

The product of its (nonzero) digits is 194400, while the sum is 37.

Adding to 61530343453 its reverse (35434303516), we get a palindrome (96964646969).

The spelling of 61530343453 in words is "sixty-one billion, five hundred thirty million, three hundred forty-three thousand, four hundred fifty-three".