7561120198 has 4 divisors (see below), whose sum is σ = 11341680300. Its totient is φ = 3780560098.

The previous prime is 7561120183. The next prime is 7561120199. The reversal of 7561120198 is 8910211657.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 7561120198.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7561120199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1890280048 + ... + 1890280051.

It is an arithmetic number, because the mean of its divisors is an integer number (2835420075).

Almost surely, 2^7561120198 is an apocalyptic number.

7561120198 is a deficient number, since it is larger than the sum of its proper divisors (3780560102).

7561120198 is a wasteful number, since it uses less digits than its factorization.

7561120198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3780560101.

The product of its (nonzero) digits is 30240, while the sum is 40.

The square root of 7561120198 is about 86954.7019890241. The cubic root of 7561120198 is about 1962.7367189431.

The spelling of 7561120198 in words is "seven billion, five hundred sixty-one million, one hundred twenty thousand, one hundred ninety-eight".