21477440462660 has 96 divisors (see below), whose sum is σ = 55513545696000. Its totient is φ = 6796934742528.

The previous prime is 21477440462593. The next prime is 21477440462663. The reversal of 21477440462660 is 6626404477412.

21477440462660 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×21477440462660² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21477440462663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39839591 + ... + 40375089.

It is an arithmetic number, because the mean of its divisors is an integer number (578266101000).

Almost surely, 2^{21477440462660} is an apocalyptic number.

21477440462660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21477440462660 is an abundant number, since it is smaller than the sum of its proper divisors (34036105233340).

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

21477440462660 is a wasteful number, since it uses less digits than its factorization.

21477440462660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557565 (or 557563 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 53.

The spelling of 21477440462660 in words is "twenty-one trillion, four hundred seventy-seven billion, four hundred forty million, four hundred sixty-two thousand, six hundred sixty".