20346513546255 has 128 divisors (see below), whose sum is σ = 37244914560000. Its totient is φ = 9396075700224.

The previous prime is 20346513546211. The next prime is 20346513546299. The reversal of 20346513546255 is 55264531564302.

It is an interprime number because it is at equal distance from previous prime (20346513546211) and next prime (20346513546299).

It is not a de Polignac number, because 20346513546255 - 2⁷ = 20346513546127 is a prime.

It is a super-2 number, since 2×20346513546255² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 20346513546198 and 20346513546207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1301835781 + ... + 1301851409.

It is an arithmetic number, because the mean of its divisors is an integer number (290975895000).

Almost surely, 2^{20346513546255} is an apocalyptic number.

20346513546255 is a deficient number, since it is larger than the sum of its proper divisors (16898401013745).

20346513546255 is a wasteful number, since it uses less digits than its factorization.

20346513546255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16953.

The product of its (nonzero) digits is 12960000, while the sum is 51.

The spelling of 20346513546255 in words is "twenty trillion, three hundred forty-six billion, five hundred thirteen million, five hundred forty-six thousand, two hundred fifty-five".