355127261421 has 8 divisors (see below), whose sum is σ = 473659868320. Its totient is φ = 236673081072.

The previous prime is 355127261387. The next prime is 355127261431. The reversal of 355127261421 is 124162721553.

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

It is not a de Polignac number, because 355127261421 - 2¹⁵ = 355127228653 is a prime.

It is a super-2 number, since 2×355127261421² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 355127261421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (355127261431) 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, 19596070 + ... + 19614183.

It is an arithmetic number, because the mean of its divisors is an integer number (59207483540).

Almost surely, 2^355127261421 is an apocalyptic number.

It is an amenable number.

355127261421 is a deficient number, since it is larger than the sum of its proper divisors (118532606899).

355127261421 is a wasteful number, since it uses less digits than its factorization.

355127261421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39213275.

The product of its digits is 100800, while the sum is 39.

Adding to 355127261421 its reverse (124162721553), we get a palindrome (479289982974).

The spelling of 355127261421 in words is "three hundred fifty-five billion, one hundred twenty-seven million, two hundred sixty-one thousand, four hundred twenty-one".