861935101960 has 32 divisors (see below), whose sum is σ = 1941253536600. Its totient is φ = 344436341760.

The previous prime is 861935101949. The next prime is 861935101961. The reversal of 861935101960 is 69101539168.

It can be written as a sum of positive squares in 4 ways, for example, as 854593011364 + 7342090596 = 924442^2 + 85686^2 .

It is not an unprimeable number, because it can be changed into a prime (861935101961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10511745 + ... + 10593424.

Almost surely, 2^861935101960 is an apocalyptic number.

It is an amenable number.

861935101960 is an abundant number, since it is smaller than the sum of its proper divisors (1079318434640).

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

861935101960 is a wasteful number, since it uses less digits than its factorization.

861935101960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21106201 (or 21106197 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 49.

The spelling of 861935101960 in words is "eight hundred sixty-one billion, nine hundred thirty-five million, one hundred one thousand, nine hundred sixty".