20469105292555 has 32 divisors (see below), whose sum is σ = 25113393923328. Its totient is φ = 16009089868800.

The previous prime is 20469105292543. The next prime is 20469105292589. The reversal of 20469105292555 is 55529250196402.

It is not a de Polignac number, because 20469105292555 - 2¹¹ = 20469105290507 is a prime.

It is a super-2 number, since 2×20469105292555² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20469105292496 and 20469105292505.

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, 842997015 + ... + 843021295.

It is an arithmetic number, because the mean of its divisors is an integer number (784793560104).

Almost surely, 2^{20469105292555} is an apocalyptic number.

20469105292555 is a deficient number, since it is larger than the sum of its proper divisors (4644288630773).

20469105292555 is a wasteful number, since it uses less digits than its factorization.

20469105292555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28167.

The product of its (nonzero) digits is 9720000, while the sum is 55.

The spelling of 20469105292555 in words is "twenty trillion, four hundred sixty-nine billion, one hundred five million, two hundred ninety-two thousand, five hundred fifty-five".