353554220465 has 4 divisors (see below), whose sum is σ = 424265064564. Its totient is φ = 282843376368.

The previous prime is 353554220399. The next prime is 353554220489. The reversal of 353554220465 is 564022455353.

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

It can be written as a sum of positive squares in 2 ways, for example, as 265942364416 + 87611856049 = 515696^2 + 295993^2 .

It is a cyclic number.

It is not a de Polignac number, because 353554220465 - 2¹⁶ = 353554154929 is a prime.

It is a super-2 number, since 2×353554220465² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35355422042 + ... + 35355422051.

It is an arithmetic number, because the mean of its divisors is an integer number (106066266141).

Almost surely, 2^353554220465 is an apocalyptic number.

It is an amenable number.

353554220465 is a deficient number, since it is larger than the sum of its proper divisors (70710844099).

353554220465 is an equidigital number, since it uses as much as digits as its factorization.

353554220465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70710844098.

The product of its (nonzero) digits is 2160000, while the sum is 44.

The spelling of 353554220465 in words is "three hundred fifty-three billion, five hundred fifty-four million, two hundred twenty thousand, four hundred sixty-five".