870672420156 has 192 divisors, whose sum is σ = 2557585981440. Its totient is φ = 225813297600.

The previous prime is 870672420119. The next prime is 870672420169. The reversal of 870672420156 is 651024276078.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 80381661 + ... + 80392491.

It is an arithmetic number, because the mean of its divisors is an integer number (13320760320).

Almost surely, 2^870672420156 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 870672420156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1278792990720).

870672420156 is an abundant number, since it is smaller than the sum of its proper divisors (1686913561284).

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

870672420156 is a wasteful number, since it uses less digits than its factorization.

870672420156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11597 (or 11573 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 48.

The spelling of 870672420156 in words is "eight hundred seventy billion, six hundred seventy-two million, four hundred twenty thousand, one hundred fifty-six".