61677161670 has 64 divisors (see below), whose sum is σ = 149658762240. Its totient is φ = 16266367488.

The previous prime is 61677161659. The next prime is 61677161677. The reversal of 61677161670 is 7616177616.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61677161677) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1563651 + ... + 1602609.

It is an arithmetic number, because the mean of its divisors is an integer number (2338418160).

Almost surely, 2^61677161670 is an apocalyptic number.

61677161670 is an abundant number, since it is smaller than the sum of its proper divisors (87981600570).

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

61677161670 is a wasteful number, since it uses less digits than its factorization.

61677161670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39549.

The product of its (nonzero) digits is 444528, while the sum is 48.

The spelling of 61677161670 in words is "sixty-one billion, six hundred seventy-seven million, one hundred sixty-one thousand, six hundred seventy".