355340840781 has 16 divisors (see below), whose sum is σ = 475289519040. Its totient is φ = 236143480320.

The previous prime is 355340840741. The next prime is 355340840819. The reversal of 355340840781 is 187048043553.

It is not a de Polignac number, because 355340840781 - 2¹⁵ = 355340808013 is a prime.

It is a super-2 number, since 2×355340840781² (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 355340840781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (355340840741) 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, 3186790 + ... + 3296408.

It is an arithmetic number, because the mean of its divisors is an integer number (29705594940).

Almost surely, 2^355340840781 is an apocalyptic number.

It is an amenable number.

355340840781 is a deficient number, since it is larger than the sum of its proper divisors (119948678259).

355340840781 is a wasteful number, since it uses less digits than its factorization.

355340840781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113036.

The product of its (nonzero) digits is 1612800, while the sum is 48.

The spelling of 355340840781 in words is "three hundred fifty-five billion, three hundred forty million, eight hundred forty thousand, seven hundred eighty-one".