61129628335 has 4 divisors (see below), whose sum is σ = 73355554008. Its totient is φ = 48903702664.

The previous prime is 61129628333. The next prime is 61129628353. The reversal of 61129628335 is 53382692116.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61129628335 - 2¹ = 61129628333 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 (61129628333) 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, 6112962829 + ... + 6112962838.

It is an arithmetic number, because the mean of its divisors is an integer number (18338888502).

Almost surely, 2^61129628335 is an apocalyptic number.

61129628335 is a deficient number, since it is larger than the sum of its proper divisors (12225925673).

61129628335 is a wasteful number, since it uses less digits than its factorization.

61129628335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12225925672.

The product of its digits is 466560, while the sum is 46.

The spelling of 61129628335 in words is "sixty-one billion, one hundred twenty-nine million, six hundred twenty-eight thousand, three hundred thirty-five".