86797221240 has 128 divisors (see below), whose sum is σ = 261589124160. Its totient is φ = 23039729664.

The previous prime is 86797221229. The next prime is 86797221281. The reversal of 86797221240 is 4212279768.

It is a super-2 number, since 2×86797221240² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 86797221240.

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, 32229334 + ... + 32232026.

Almost surely, 2^86797221240 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 86797221240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130794562080).

86797221240 is an abundant number, since it is smaller than the sum of its proper divisors (174791902920).

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

86797221240 is a wasteful number, since it uses less digits than its factorization.

86797221240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3841 (or 3837 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 48.

The spelling of 86797221240 in words is "eighty-six billion, seven hundred ninety-seven million, two hundred twenty-one thousand, two hundred forty".