20434211740 has 24 divisors (see below), whose sum is σ = 42914556720. Its totient is φ = 8173168128.

The previous prime is 20434211737. The next prime is 20434211767. The reversal of 20434211740 is 4711243402.

It is a super-3 number, since 3×20434211740³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20434211699 and 20434211708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 536364 + ... + 573196.

It is an arithmetic number, because the mean of its divisors is an integer number (1788106530).

Almost surely, 2^20434211740 is an apocalyptic number.

20434211740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20434211740 is an abundant number, since it is smaller than the sum of its proper divisors (22480344980).

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

20434211740 is a wasteful number, since it uses less digits than its factorization.

20434211740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64581 (or 64579 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The spelling of 20434211740 in words is "twenty billion, four hundred thirty-four million, two hundred eleven thousand, seven hundred forty".