20435067744 has 96 divisors (see below), whose sum is σ = 66021016320. Its totient is φ = 5389466112.

The previous prime is 20435067733. The next prime is 20435067749. The reversal of 20435067744 is 44776053402.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 20435067696 and 20435067705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20435067749) 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, 1160854 + ... + 1178325.

It is an arithmetic number, because the mean of its divisors is an integer number (687718920).

Almost surely, 2^20435067744 is an apocalyptic number.

20435067744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20435067744 is an abundant number, since it is smaller than the sum of its proper divisors (45585948576).

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

20435067744 is a wasteful number, since it uses less digits than its factorization.

20435067744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2339212 (or 2339204 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 42.

The spelling of 20435067744 in words is "twenty billion, four hundred thirty-five million, sixty-seven thousand, seven hundred forty-four".