61277314128 has 40 divisors (see below), whose sum is σ = 163758343200. Its totient is φ = 19721433984.

The previous prime is 61277314103. The next prime is 61277314129. The reversal of 61277314128 is 82141377216.

It is a self number, because there is not a number n which added to its sum of digits gives 61277314128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61277314129) 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, 22009138 + ... + 22011921.

It is an arithmetic number, because the mean of its divisors is an integer number (4093958580).

Almost surely, 2^61277314128 is an apocalyptic number.

It is an amenable number.

61277314128 is an abundant number, since it is smaller than the sum of its proper divisors (102481029072).

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

61277314128 is a wasteful number, since it uses less digits than its factorization.

61277314128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44021099 (or 44021093 counting only the distinct ones).

The product of its digits is 112896, while the sum is 42.

The spelling of 61277314128 in words is "sixty-one billion, two hundred seventy-seven million, three hundred fourteen thousand, one hundred twenty-eight".