21103158615430 has 32 divisors (see below), whose sum is σ = 39295948400640. Its totient is φ = 8150100013440.

The previous prime is 21103158615359. The next prime is 21103158615431. The reversal of 21103158615430 is 3451685130112.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21103158615431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32117352 + ... + 32767828.

It is an arithmetic number, because the mean of its divisors is an integer number (1227998387520).

Almost surely, 2^{21103158615430} is an apocalyptic number.

21103158615430 is a deficient number, since it is larger than the sum of its proper divisors (18192789785210).

21103158615430 is a wasteful number, since it uses less digits than its factorization.

21103158615430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762384.

The product of its (nonzero) digits is 86400, while the sum is 40.

The spelling of 21103158615430 in words is "twenty-one trillion, one hundred three billion, one hundred fifty-eight million, six hundred fifteen thousand, four hundred thirty".