616644450198 has 48 divisors (see below), whose sum is σ = 1576184902656. Its totient is φ = 170500768560.

The previous prime is 616644450157. The next prime is 616644450223. The reversal of 616644450198 is 891054446616.

616644450198 is a `hidden beast` number, since 6 + 1 + 6 + 6 + 4 + 44 + 501 + 98 = 666.

It is a congruent number.

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, 78931636 + ... + 78939447.

It is an arithmetic number, because the mean of its divisors is an integer number (32837185472).

Almost surely, 2^616644450198 is an apocalyptic number.

616644450198 is an abundant number, since it is smaller than the sum of its proper divisors (959540452458).

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

616644450198 is a wasteful number, since it uses less digits than its factorization.

616644450198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157871129 (or 157871126 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 616644450198 in words is "six hundred sixteen billion, six hundred forty-four million, four hundred fifty thousand, one hundred ninety-eight".