2061691351898 has 16 divisors (see below), whose sum is σ = 3094711467264. Its totient is φ = 1030120969680.

The previous prime is 2061691351897. The next prime is 2061691351919. The reversal of 2061691351898 is 8981531961602.

It is not an unprimeable number, because it can be changed into a prime (2061691351897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65649536 + ... + 65680932.

It is an arithmetic number, because the mean of its divisors is an integer number (193419466704).

Almost surely, 2^{2061691351898} is an apocalyptic number.

2061691351898 is a deficient number, since it is larger than the sum of its proper divisors (1033020115366).

2061691351898 is a wasteful number, since it uses less digits than its factorization.

2061691351898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53437.

The product of its (nonzero) digits is 5598720, while the sum is 59.

The spelling of 2061691351898 in words is "two trillion, sixty-one billion, six hundred ninety-one million, three hundred fifty-one thousand, eight hundred ninety-eight".