355104377661 has 16 divisors (see below), whose sum is σ = 516599078400. Its totient is φ = 215179932720.

The previous prime is 355104377633. The next prime is 355104377723. The reversal of 355104377661 is 166773401553.

It is not a de Polignac number, because 355104377661 - 2¹⁹ = 355103853373 is a prime.

It is a super-2 number, since 2×355104377661² (a number of 24 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 355104377661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (355104377611) 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, 663375 + ... + 1072508.

It is an arithmetic number, because the mean of its divisors is an integer number (32287442400).

Almost surely, 2^355104377661 is an apocalyptic number.

It is an amenable number.

355104377661 is a deficient number, since it is larger than the sum of its proper divisors (161494700739).

355104377661 is a wasteful number, since it uses less digits than its factorization.

355104377661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1742096.

The product of its (nonzero) digits is 1587600, while the sum is 48.

The spelling of 355104377661 in words is "three hundred fifty-five billion, one hundred four million, three hundred seventy-seven thousand, six hundred sixty-one".