20355253401464 has 128 divisors (see below), whose sum is σ = 39185710200000. Its totient is φ = 9910734704640.

The previous prime is 20355253401433. The next prime is 20355253401479. The reversal of 20355253401464 is 46410435255302.

It is a congruent 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, 7277529314 + ... + 7277532110.

Almost surely, 2^{20355253401464} is an apocalyptic number.

It is an amenable number.

20355253401464 is a deficient number, since it is larger than the sum of its proper divisors (18830456798536).

20355253401464 is a wasteful number, since it uses less digits than its factorization.

20355253401464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3601 (or 3597 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 44.

Adding to 20355253401464 its reverse (46410435255302), we get a palindrome (66765688656766).

The spelling of 20355253401464 in words is "twenty trillion, three hundred fifty-five billion, two hundred fifty-three million, four hundred one thousand, four hundred sixty-four".