20355254451445 has 16 divisors (see below), whose sum is σ = 25853955079680. Its totient is φ = 15341907384000.

The previous prime is 20355254451443. The next prime is 20355254451451. The reversal of 20355254451445 is 54415445255302.

It is not a de Polignac number, because 20355254451445 - 2¹ = 20355254451443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20355254451443) 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, 591877381 + ... + 591911770.

It is an arithmetic number, because the mean of its divisors is an integer number (1615872192480).

Almost surely, 2^{20355254451445} is an apocalyptic number.

It is an amenable number.

20355254451445 is a deficient number, since it is larger than the sum of its proper divisors (5498700628235).

20355254451445 is a wasteful number, since it uses less digits than its factorization.

20355254451445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183789356.

The product of its (nonzero) digits is 9600000, while the sum is 49.

The spelling of 20355254451445 in words is "twenty trillion, three hundred fifty-five billion, two hundred fifty-four million, four hundred fifty-one thousand, four hundred forty-five".