21150402410 has 16 divisors (see below), whose sum is σ = 38304290016. Its totient is φ = 8408257488.

The previous prime is 21150402391. The next prime is 21150402431. The reversal of 21150402410 is 1420405112.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6486224 + ... + 6489483.

It is an arithmetic number, because the mean of its divisors is an integer number (2394018126).

Almost surely, 2^21150402410 is an apocalyptic number.

21150402410 is a deficient number, since it is larger than the sum of its proper divisors (17153887606).

21150402410 is a wasteful number, since it uses less digits than its factorization.

21150402410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12975877.

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 21150402410 its reverse (1420405112), we get a palindrome (22570807522).

The spelling of 21150402410 in words is "twenty-one billion, one hundred fifty million, four hundred two thousand, four hundred ten".