21322273740 has 48 divisors (see below), whose sum is σ = 62298125568. Its totient is φ = 5438724544.

The previous prime is 21322273657. The next prime is 21322273759. The reversal of 21322273740 is 4737222312.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7724082 + ... + 7726841.

It is an arithmetic number, because the mean of its divisors is an integer number (1297877616).

Almost surely, 2^21322273740 is an apocalyptic number.

21322273740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21322273740 is an abundant number, since it is smaller than the sum of its proper divisors (40975851828).

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

21322273740 is a wasteful number, since it uses less digits than its factorization.

21322273740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15450958 (or 15450956 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 33.

The spelling of 21322273740 in words is "twenty-one billion, three hundred twenty-two million, two hundred seventy-three thousand, seven hundred forty".