1601161261698 has 8 divisors (see below), whose sum is σ = 3202322523408. Its totient is φ = 533720420564.

The previous prime is 1601161261627. The next prime is 1601161261753. The reversal of 1601161261698 is 8961621611061.

It is a sphenic number, since it is the product of 3 distinct primes.

1601161261698 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133430105136 + ... + 133430105147.

It is an arithmetic number, because the mean of its divisors is an integer number (400290315426).

Almost surely, 2^{1601161261698} is an apocalyptic number.

1601161261698 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1601161261698 is a wasteful number, since it uses less digits than its factorization.

1601161261698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266860210288.

The product of its (nonzero) digits is 186624, while the sum is 48.

The spelling of 1601161261698 in words is "one trillion, six hundred one billion, one hundred sixty-one million, two hundred sixty-one thousand, six hundred ninety-eight".