61027031870 has 96 divisors (see below), whose sum is σ = 129171594240. Its totient is φ = 20697223680.

The previous prime is 61027031867. The next prime is 61027031903. The reversal of 61027031870 is 7813072016.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 61027031870.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24206210 + ... + 24208730.

It is an arithmetic number, because the mean of its divisors is an integer number (1345537440).

Almost surely, 2^61027031870 is an apocalyptic number.

61027031870 is an abundant number, since it is smaller than the sum of its proper divisors (68144562370).

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

61027031870 is a wasteful number, since it uses less digits than its factorization.

61027031870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3058 (or 3051 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 35.

The spelling of 61027031870 in words is "sixty-one billion, twenty-seven million, thirty-one thousand, eight hundred seventy".