21151431641302 has 8 divisors (see below), whose sum is σ = 32264895724200. Its totient is φ = 10396466399904.

The previous prime is 21151431641287. The next prime is 21151431641371. The reversal of 21151431641302 is 20314613415112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 89624710227 + ... + 89624710462.

It is an arithmetic number, because the mean of its divisors is an integer number (4033111965525).

Almost surely, 2^{21151431641302} is an apocalyptic number.

21151431641302 is a deficient number, since it is larger than the sum of its proper divisors (11113464082898).

21151431641302 is a wasteful number, since it uses less digits than its factorization.

21151431641302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179249420750.

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 21151431641302 in words is "twenty-one trillion, one hundred fifty-one billion, four hundred thirty-one million, six hundred forty-one thousand, three hundred two".