21277753060 has 24 divisors (see below), whose sum is σ = 47035033920. Its totient is φ = 8063148384.

The previous prime is 21277753051. The next prime is 21277753069. The reversal of 21277753060 is 6035777212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21277753051) and next prime (21277753069).

It is not an unprimeable number, because it can be changed into a prime (21277753069) 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 7 ways as a sum of consecutive naturals, for example, 27996664 + ... + 27997423.

It is an arithmetic number, because the mean of its divisors is an integer number (1959793080).

Almost surely, 2^21277753060 is an apocalyptic number.

21277753060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21277753060 is an abundant number, since it is smaller than the sum of its proper divisors (25757280860).

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

21277753060 is a wasteful number, since it uses less digits than its factorization.

21277753060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55994115 (or 55994113 counting only the distinct ones).

The product of its (nonzero) digits is 123480, while the sum is 40.

The spelling of 21277753060 in words is "twenty-one billion, two hundred seventy-seven million, seven hundred fifty-three thousand, sixty".