87755940198 has 24 divisors (see below), whose sum is σ = 190162498968. Its totient is φ = 29248191072.

The previous prime is 87755940197. The next prime is 87755940229. The reversal of 87755940198 is 89104955778.

87755940198 is a `hidden beast` number, since 8 + 77 + 559 + 4 + 0 + 1 + 9 + 8 = 666.

It is a super-2 number, since 2×87755940198² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87755940197) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 171136 + ... + 452547.

It is an arithmetic number, because the mean of its divisors is an integer number (7923437457).

Almost surely, 2^87755940198 is an apocalyptic number.

87755940198 is an abundant number, since it is smaller than the sum of its proper divisors (102406558770).

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

87755940198 is a wasteful number, since it uses less digits than its factorization.

87755940198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631508 (or 631505 counting only the distinct ones).

The product of its (nonzero) digits is 25401600, while the sum is 63.

The spelling of 87755940198 in words is "eighty-seven billion, seven hundred fifty-five million, nine hundred forty thousand, one hundred ninety-eight".