61553434223 has 8 divisors (see below), whose sum is σ = 62004943728. Its totient is φ = 61103291904.

The previous prime is 61553434211. The next prime is 61553434231. The reversal of 61553434223 is 32243435516.

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 61553434223 - 2⁸ = 61553433967 is a prime.

It is a super-2 number, since 2×61553434223² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61553434123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251336 + ... + 431597.

It is an arithmetic number, because the mean of its divisors is an integer number (7750617966).

Almost surely, 2^61553434223 is an apocalyptic number.

61553434223 is a deficient number, since it is larger than the sum of its proper divisors (451509505).

61553434223 is a wasteful number, since it uses less digits than its factorization.

61553434223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683593.

The product of its digits is 259200, while the sum is 38.

Adding to 61553434223 its reverse (32243435516), we get a palindrome (93796869739).

The spelling of 61553434223 in words is "sixty-one billion, five hundred fifty-three million, four hundred thirty-four thousand, two hundred twenty-three".