261070195932 has 768 divisors, whose sum is σ = 926650368000. Its totient is φ = 61602342912.

The previous prime is 261070195927. The next prime is 261070195949. The reversal of 261070195932 is 239591070162.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 382240063 + ... + 382240745.

It is an arithmetic number, because the mean of its divisors is an integer number (1206576000).

Almost surely, 2^261070195932 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 261070195932, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (463325184000).

261070195932 is an abundant number, since it is smaller than the sum of its proper divisors (665580172068).

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

261070195932 is a wasteful number, since it uses less digits than its factorization.

261070195932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847 (or 839 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The spelling of 261070195932 in words is "two hundred sixty-one billion, seventy million, one hundred ninety-five thousand, nine hundred thirty-two".