20612037455 has 4 divisors (see below), whose sum is σ = 24734444952. Its totient is φ = 16489629960.

The previous prime is 20612037427. The next prime is 20612037521. The reversal of 20612037455 is 55473021602.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55473021602 = 2 ⋅27736510801.

It is not a de Polignac number, because 20612037455 - 2¹⁸ = 20611775311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2061203741 + ... + 2061203750.

It is an arithmetic number, because the mean of its divisors is an integer number (6183611238).

Almost surely, 2^20612037455 is an apocalyptic number.

20612037455 is a deficient number, since it is larger than the sum of its proper divisors (4122407497).

20612037455 is an equidigital number, since it uses as much as digits as its factorization.

20612037455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4122407496.

The product of its (nonzero) digits is 50400, while the sum is 35.

The spelling of 20612037455 in words is "twenty billion, six hundred twelve million, thirty-seven thousand, four hundred fifty-five".