21510414302 has 12 divisors (see below), whose sum is σ = 34938513720. Its totient is φ = 9927883368.

The previous prime is 21510414301. The next prime is 21510414319. The reversal of 21510414302 is 20341401512.

It is a super-2 number, since 2×21510414302² (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 (21510414301) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31819802 + ... + 31820477.

It is an arithmetic number, because the mean of its divisors is an integer number (2911542810).

Almost surely, 2^21510414302 is an apocalyptic number.

21510414302 is a deficient number, since it is larger than the sum of its proper divisors (13428099418).

21510414302 is a wasteful number, since it uses less digits than its factorization.

21510414302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63640307 (or 63640294 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 21510414302 its reverse (20341401512), we get a palindrome (41851815814).

The spelling of 21510414302 in words is "twenty-one billion, five hundred ten million, four hundred fourteen thousand, three hundred two".