355206660479 has 4 divisors (see below), whose sum is σ = 387498175080. Its totient is φ = 322915145880.

The previous prime is 355206660469. The next prime is 355206660491. The reversal of 355206660479 is 974066602553.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-355206660479 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 355206660479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (355206660469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16145757284 + ... + 16145757305.

It is an arithmetic number, because the mean of its divisors is an integer number (96874543770).

Almost surely, 2^355206660479 is an apocalyptic number.

355206660479 is a deficient number, since it is larger than the sum of its proper divisors (32291514601).

355206660479 is a wasteful number, since it uses less digits than its factorization.

355206660479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32291514600.

The product of its (nonzero) digits is 8164800, while the sum is 53.

The spelling of 355206660479 in words is "three hundred fifty-five billion, two hundred six million, six hundred sixty thousand, four hundred seventy-nine".