354513123554220 has 72 divisors (see below), whose sum is σ = 1075361754907440. Its totient is φ = 94536368760960.

The previous prime is 354513123554173. The next prime is 354513123554279. The reversal of 354513123554220 is 22455321315453.

354513123554220 is a `hidden beast` number, since 3 + 5 + 4 + 51 + 3 + 1 + 2 + 35 + 542 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32734171 + ... + 42196589.

It is an arithmetic number, because the mean of its divisors is an integer number (14935579929270).

Almost surely, 2^{354513123554220} is an apocalyptic number.

354513123554220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

354513123554220 is an abundant number, since it is smaller than the sum of its proper divisors (720848631353220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

354513123554220 is a wasteful number, since it uses less digits than its factorization.

354513123554220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9670575 (or 9670570 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 45.

Adding to 354513123554220 its reverse (22455321315453), we get a palindrome (376968444869673).

The spelling of 354513123554220 in words is "three hundred fifty-four trillion, five hundred thirteen billion, one hundred twenty-three million, five hundred fifty-four thousand, two hundred twenty".