861570148160 has 224 divisors, whose sum is σ = 2144157979392. Its totient is φ = 329462415360.

The previous prime is 861570148121. The next prime is 861570148171. The reversal of 861570148160 is 61841075168.

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 31 ways as a sum of consecutive naturals, for example, 159754424 + ... + 159759816.

Almost surely, 2^861570148160 is an apocalyptic number.

861570148160 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 861570148160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1072078989696).

861570148160 is an abundant number, since it is smaller than the sum of its proper divisors (1282587831232).

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

861570148160 is a wasteful number, since it uses less digits than its factorization.

861570148160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5681 (or 5671 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 47.

The spelling of 861570148160 in words is "eight hundred sixty-one billion, five hundred seventy million, one hundred forty-eight thousand, one hundred sixty".