6198517655 has 16 divisors (see below), whose sum is σ = 8116568064.
Its totient is φ = 4506821280.
The previous prime is 6198517643. The next prime is 6198517657. The reversal of 6198517655 is 5567158916.
It is not a de Polignac number, because 6198517655 - 210 = 6198516631 is a prime.
It is a super-2 number, since 2×61985176552 = 76843242238693398050, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 6198517597 and 6198517606.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (6198517657) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231914 + ... + 257256.
It is an arithmetic number, because the mean of its divisors is an integer number (507285504).
Almost surely, 26198517655 is an apocalyptic number.
6198517655 is a deficient number, since it is larger than the sum of its proper divisors (1918050409).
6198517655 is a wasteful number, since it uses less digits than its factorization.
6198517655 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 29806.
The product of its digits is 2268000, while the sum is 53.
The square root of 6198517655 is about 78730.6652772603.
The cubic root of 6198517655 is about 1836.9441296353.
The spelling of 6198517655 in words is "six billion, one hundred ninety-eight million, five hundred seventeen thousand, six hundred fifty-five".