210120540355 has 32 divisors (see below), whose sum is σ = 275799748608. Its totient is φ = 152408371200.

The previous prime is 210120540349. The next prime is 210120540367. The reversal of 210120540355 is 553045021012.

It is not a de Polignac number, because 210120540355 - 2¹¹ = 210120538307 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38319444 + ... + 38324926.

It is an arithmetic number, because the mean of its divisors is an integer number (8618742144).

Almost surely, 2^210120540355 is an apocalyptic number.

210120540355 is a deficient number, since it is larger than the sum of its proper divisors (65679208253).

210120540355 is a wasteful number, since it uses less digits than its factorization.

210120540355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7227.

The product of its (nonzero) digits is 6000, while the sum is 28.

Adding to 210120540355 its reverse (553045021012), we get a palindrome (763165561367).

The spelling of 210120540355 in words is "two hundred ten billion, one hundred twenty million, five hundred forty thousand, three hundred fifty-five".