20435061340 has 24 divisors (see below), whose sum is σ = 43338520512. Its totient is φ = 8093092800.

The previous prime is 20435061319. The next prime is 20435061341. The reversal of 20435061340 is 4316053402.

It is a junction number, because it is equal to n+sod(n) for n = 20435061299 and 20435061308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20435061341) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5056164 + ... + 5060203.

It is an arithmetic number, because the mean of its divisors is an integer number (1805771688).

Almost surely, 2^20435061340 is an apocalyptic number.

20435061340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20435061340 is an abundant number, since it is smaller than the sum of its proper divisors (22903459172).

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

20435061340 is a wasteful number, since it uses less digits than its factorization.

20435061340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10116477 (or 10116475 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The spelling of 20435061340 in words is "twenty billion, four hundred thirty-five million, sixty-one thousand, three hundred forty".