861023619970 has 16 divisors (see below), whose sum is σ = 1631413175040. Its totient is φ = 326282634864.

The previous prime is 861023619901. The next prime is 861023620043. The reversal of 861023619970 is 79916320168.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2265851442 + ... + 2265851821.

It is an arithmetic number, because the mean of its divisors is an integer number (101963323440).

Almost surely, 2^861023619970 is an apocalyptic number.

861023619970 is a deficient number, since it is larger than the sum of its proper divisors (770389555070).

861023619970 is a wasteful number, since it uses less digits than its factorization.

861023619970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4531703289.

The product of its (nonzero) digits is 979776, while the sum is 52.

The spelling of 861023619970 in words is "eight hundred sixty-one billion, twenty-three million, six hundred nineteen thousand, nine hundred seventy".