61430223551 has 8 divisors (see below), whose sum is σ = 62882832384. Its totient is φ = 59983680760.

The previous prime is 61430223529. The next prime is 61430223553. The reversal of 61430223551 is 15532203416.

It is a happy number.

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 61430223551 - 2¹⁰ = 61430222527 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 (61430223553) 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, 1496015 + ... + 1536528.

It is an arithmetic number, because the mean of its divisors is an integer number (7860354048).

Almost surely, 2^61430223551 is an apocalyptic number.

61430223551 is a deficient number, since it is larger than the sum of its proper divisors (1452608833).

61430223551 is a wasteful number, since it uses less digits than its factorization.

61430223551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3033021.

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 61430223551 its reverse (15532203416), we get a palindrome (76962426967).

The spelling of 61430223551 in words is "sixty-one billion, four hundred thirty million, two hundred twenty-three thousand, five hundred fifty-one".