21000701460 has 48 divisors (see below), whose sum is σ = 62260906176. Its totient is φ = 5270764032.

The previous prime is 21000701441. The next prime is 21000701461. The reversal of 21000701460 is 6410700012.

It is a super-2 number, since 2×21000701460² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21000701461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10293442 + ... + 10295481.

It is an arithmetic number, because the mean of its divisors is an integer number (1297102212).

Almost surely, 2^21000701460 is an apocalyptic number.

21000701460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21000701460 is an abundant number, since it is smaller than the sum of its proper divisors (41260204716).

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

21000701460 is a wasteful number, since it uses less digits than its factorization.

21000701460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20588952 (or 20588950 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The spelling of 21000701460 in words is "twenty-one billion, seven hundred one thousand, four hundred sixty".