61276628028 has 48 divisors (see below), whose sum is σ = 178259284224. Its totient is φ = 15916007040.

The previous prime is 61276628011. The next prime is 61276628047. The reversal of 61276628028 is 82082667216.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33157425 + ... + 33159272.

It is an arithmetic number, because the mean of its divisors is an integer number (3713735088).

Almost surely, 2^61276628028 is an apocalyptic number.

It is an amenable number.

61276628028 is an abundant number, since it is smaller than the sum of its proper divisors (116982656196).

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

61276628028 is a wasteful number, since it uses less digits than its factorization.

61276628028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66316722 (or 66316720 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 61276628028 in words is "sixty-one billion, two hundred seventy-six million, six hundred twenty-eight thousand, twenty-eight".