20526746340 has 48 divisors (see below), whose sum is σ = 57486619008. Its totient is φ = 5472681984.

The previous prime is 20526746323. The next prime is 20526746369. The reversal of 20526746340 is 4364762502.

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 15 ways as a sum of consecutive naturals, for example, 285924 + ... + 350436.

It is an arithmetic number, because the mean of its divisors is an integer number (1197637896).

Almost surely, 2^20526746340 is an apocalyptic number.

20526746340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20526746340 is an abundant number, since it is smaller than the sum of its proper divisors (36959872668).

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

20526746340 is a wasteful number, since it uses less digits than its factorization.

20526746340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69828 (or 69826 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 39.

The spelling of 20526746340 in words is "twenty billion, five hundred twenty-six million, seven hundred forty-six thousand, three hundred forty".