61129628334 has 12 divisors (see below), whose sum is σ = 132447528096. Its totient is φ = 20376542772.

The previous prime is 61129628333. The next prime is 61129628353. The reversal of 61129628334 is 43382692116.

61129628334 is a `hidden beast` number, since 6 + 1 + 1 + 296 + 28 + 334 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 61129628334.

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 5 ways as a sum of consecutive naturals, for example, 1698045214 + ... + 1698045249.

It is an arithmetic number, because the mean of its divisors is an integer number (11037294008).

Almost surely, 2^61129628334 is an apocalyptic number.

61129628334 is an abundant number, since it is smaller than the sum of its proper divisors (71317899762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61129628334 is a wasteful number, since it uses less digits than its factorization.

61129628334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3396090471 (or 3396090468 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The spelling of 61129628334 in words is "sixty-one billion, one hundred twenty-nine million, six hundred twenty-eight thousand, three hundred thirty-four".