354405676655 has 16 divisors (see below), whose sum is σ = 433313992800. Its totient is φ = 278206021632.

The previous prime is 354405676621. The next prime is 354405676657. The reversal of 354405676655 is 556676504453.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-354405676655 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 354405676655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (354405676657) 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, 1972130 + ... + 2144319.

It is an arithmetic number, because the mean of its divisors is an integer number (27082124550).

Almost surely, 2^354405676655 is an apocalyptic number.

354405676655 is a deficient number, since it is larger than the sum of its proper divisors (78908316145).

354405676655 is a wasteful number, since it uses less digits than its factorization.

354405676655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4116778.

The product of its (nonzero) digits is 45360000, while the sum is 56.

The spelling of 354405676655 in words is "three hundred fifty-four billion, four hundred five million, six hundred seventy-six thousand, six hundred fifty-five".