194099487690657 has 16 divisors (see below), whose sum is σ = 261219106429632. Its totient is φ = 128189773931520.

The previous prime is 194099487690613. The next prime is 194099487690659. The reversal of 194099487690657 is 756096784990491.

It is not a de Polignac number, because 194099487690657 - 2⁶ = 194099487690593 is a prime.

It is a super-2 number, since 2×194099487690657² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 194099487690657.

It is not an unprimeable number, because it can be changed into a prime (194099487690659) 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, 83521033 + ... + 85813529.

It is an arithmetic number, because the mean of its divisors is an integer number (16326194151852).

Almost surely, 2^{194099487690657} is an apocalyptic number.

It is an amenable number.

194099487690657 is a deficient number, since it is larger than the sum of its proper divisors (67119618738975).

194099487690657 is a wasteful number, since it uses less digits than its factorization.

194099487690657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2556368.

The product of its (nonzero) digits is 7407106560, while the sum is 84.

The spelling of 194099487690657 in words is "one hundred ninety-four trillion, ninety-nine billion, four hundred eighty-seven million, six hundred ninety thousand, six hundred fifty-seven".