20270591488 has 160 divisors (see below), whose sum is σ = 49082001408. Its totient is φ = 8178278400.

The previous prime is 20270591479. The next prime is 20270591521. The reversal of 20270591488 is 88419507202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4108383 + ... + 4113313.

Almost surely, 2^20270591488 is an apocalyptic number.

20270591488 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20270591488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24541000704).

20270591488 is an abundant number, since it is smaller than the sum of its proper divisors (28811409920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20270591488 is an equidigital number, since it uses as much as digits as its factorization.

20270591488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5024 (or 5008 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 46.

The spelling of 20270591488 in words is "twenty billion, two hundred seventy million, five hundred ninety-one thousand, four hundred eighty-eight".