61573615670 has 32 divisors (see below), whose sum is σ = 126711736128. Its totient is φ = 21103285248.

The previous prime is 61573615669. The next prime is 61573615699. The reversal of 61573615670 is 7651637516.

It is a Curzon number.

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, 36014 + ... + 352766.

It is an arithmetic number, because the mean of its divisors is an integer number (3959741754).

Almost surely, 2^61573615670 is an apocalyptic number.

61573615670 is an abundant number, since it is smaller than the sum of its proper divisors (65138120458).

61573615670 is a wasteful number, since it uses less digits than its factorization.

61573615670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319544.

The product of its (nonzero) digits is 793800, while the sum is 47.

The spelling of 61573615670 in words is "sixty-one billion, five hundred seventy-three million, six hundred fifteen thousand, six hundred seventy".