20267507165055 has 16 divisors (see below), whose sum is σ = 32462038781280. Its totient is φ = 10797994715648.

The previous prime is 20267507165039. The next prime is 20267507165089. The reversal of 20267507165055 is 55056170576202.

It is a cyclic number.

It is not a de Polignac number, because 20267507165055 - 2⁴ = 20267507165039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20267507164989 and 20267507165007.

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, 708887670 + ... + 708916259.

It is an arithmetic number, because the mean of its divisors is an integer number (2028877423830).

Almost surely, 2^{20267507165055} is an apocalyptic number.

20267507165055 is a deficient number, since it is larger than the sum of its proper divisors (12194531616225).

20267507165055 is a wasteful number, since it uses less digits than its factorization.

20267507165055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1417804890.

The product of its (nonzero) digits is 4410000, while the sum is 51.

The spelling of 20267507165055 in words is "twenty trillion, two hundred sixty-seven billion, five hundred seven million, one hundred sixty-five thousand, fifty-five".