21035549076 has 48 divisors (see below), whose sum is σ = 49841003520. Its totient is φ = 6904212480.

The previous prime is 21035549071. The next prime is 21035549081. The reversal of 21035549076 is 67094553012.

It is an interprime number because it is at equal distance from previous prime (21035549071) and next prime (21035549081).

It is a super-3 number, since 3×21035549076³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21035549071) 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, 216525 + ... + 298251.

It is an arithmetic number, because the mean of its divisors is an integer number (1038354240).

Almost surely, 2^21035549076 is an apocalyptic number.

It is an amenable number.

21035549076 is an abundant number, since it is smaller than the sum of its proper divisors (28805454444).

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

21035549076 is a wasteful number, since it uses less digits than its factorization.

21035549076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82064 (or 82062 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 42.

The spelling of 21035549076 in words is "twenty-one billion, thirty-five million, five hundred forty-nine thousand, seventy-six".