21203276740 has 48 divisors (see below), whose sum is σ = 44824752000. Its totient is φ = 8424680192.

The previous prime is 21203276729. The next prime is 21203276749. The reversal of 21203276740 is 4767230212.

It is a junction number, because it is equal to n+sod(n) for n = 21203276696 and 21203276705.

It is not an unprimeable number, because it can be changed into a prime (21203276749) 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, 3924561 + ... + 3929959.

It is an arithmetic number, because the mean of its divisors is an integer number (933849000).

Almost surely, 2^21203276740 is an apocalyptic number.

21203276740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21203276740 is an abundant number, since it is smaller than the sum of its proper divisors (23621475260).

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

21203276740 is a wasteful number, since it uses less digits than its factorization.

21203276740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6684 (or 6682 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 34.

The spelling of 21203276740 in words is "twenty-one billion, two hundred three million, two hundred seventy-six thousand, seven hundred forty".