20052055491 has 16 divisors (see below), whose sum is σ = 28902187776. Its totient is φ = 12292801056.

The previous prime is 20052055489. The next prime is 20052055519. The reversal of 20052055491 is 19455025002.

It is not a de Polignac number, because 20052055491 - 2¹ = 20052055489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20052055411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 967225 + ... + 987738.

It is an arithmetic number, because the mean of its divisors is an integer number (1806386736).

Almost surely, 2^20052055491 is an apocalyptic number.

20052055491 is a deficient number, since it is larger than the sum of its proper divisors (8850132285).

20052055491 is a wasteful number, since it uses less digits than its factorization.

20052055491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1955242.

The product of its (nonzero) digits is 18000, while the sum is 33.

The spelling of 20052055491 in words is "twenty billion, fifty-two million, fifty-five thousand, four hundred ninety-one".