61631045670 has 32 divisors (see below), whose sum is σ = 147930059232. Its totient is φ = 16433217792.

The previous prime is 61631045611. The next prime is 61631045683. The reversal of 61631045670 is 7654013616.

61631045670 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 196194 + ... + 402186.

It is an arithmetic number, because the mean of its divisors is an integer number (4622814351).

Almost surely, 2^61631045670 is an apocalyptic number.

61631045670 is an abundant number, since it is smaller than the sum of its proper divisors (86299013562).

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

61631045670 is a wasteful number, since it uses less digits than its factorization.

61631045670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215976.

The product of its (nonzero) digits is 90720, while the sum is 39.

The spelling of 61631045670 in words is "sixty-one billion, six hundred thirty-one million, forty-five thousand, six hundred seventy".