87205947426 has 48 divisors (see below), whose sum is σ = 208980038904. Its totient is φ = 26107391232.

The previous prime is 87205947403. The next prime is 87205947443. The reversal of 87205947426 is 62474950278.

87205947426 is a `hidden beast` number, since 8 + 7 + 2 + 0 + 594 + 7 + 42 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 78204681801 + 9001265625 = 279651^2 + 94875^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5027491 + ... + 5044806.

Almost surely, 2^87205947426 is an apocalyptic number.

87205947426 is an abundant number, since it is smaller than the sum of its proper divisors (121774091478).

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

87205947426 is a wasteful number, since it uses less digits than its factorization.

87205947426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10072355 (or 10072352 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 54.

The spelling of 87205947426 in words is "eighty-seven billion, two hundred five million, nine hundred forty-seven thousand, four hundred twenty-six".