61027328172 has 48 divisors (see below), whose sum is σ = 143848357632. Its totient is φ = 20135236800.

The previous prime is 61027328147. The next prime is 61027328239. The reversal of 61027328172 is 27182372016.

It is a super-3 number, since 3×61027328172³ (a number of 33 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61027328172.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7004643 + ... + 7013349.

It is an arithmetic number, because the mean of its divisors is an integer number (2996840784).

Almost surely, 2^61027328172 is an apocalyptic number.

It is an amenable number.

61027328172 is an abundant number, since it is smaller than the sum of its proper divisors (82821029460).

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

61027328172 is a wasteful number, since it uses less digits than its factorization.

61027328172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14598 (or 14596 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 39.

The spelling of 61027328172 in words is "sixty-one billion, twenty-seven million, three hundred twenty-eight thousand, one hundred seventy-two".