20034555111245 has 16 divisors (see below), whose sum is σ = 24077946401712. Its totient is φ = 16003339645440.

The previous prime is 20034555111157. The next prime is 20034555111271. The reversal of 20034555111245 is 54211155543002.

It can be written as a sum of positive squares in 8 ways, for example, as 4519795212361 + 15514759898884 = 2125981^2 + 3938878^2 .

It is a de Polignac number, because none of the positive numbers 2^k-20034555111245 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20034555111199 and 20034555111208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9219959 + ... + 11183771.

It is an arithmetic number, because the mean of its divisors is an integer number (1504871650107).

Almost surely, 2^{20034555111245} is an apocalyptic number.

It is an amenable number.

20034555111245 is a deficient number, since it is larger than the sum of its proper divisors (4043391290467).

20034555111245 is a wasteful number, since it uses less digits than its factorization.

20034555111245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1966912.

The product of its (nonzero) digits is 120000, while the sum is 38.

The spelling of 20034555111245 in words is "twenty trillion, thirty-four billion, five hundred fifty-five million, one hundred eleven thousand, two hundred forty-five".