21415355101154 has 64 divisors (see below), whose sum is σ = 37094145177600. Its totient is φ = 9082930889088.

The previous prime is 21415355101139. The next prime is 21415355101171. The reversal of 21415355101154 is 45110155351412.

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 31 ways as a sum of consecutive naturals, for example, 1539226502 + ... + 1539240414.

It is an arithmetic number, because the mean of its divisors is an integer number (579596018400).

Almost surely, 2^{21415355101154} is an apocalyptic number.

21415355101154 is a deficient number, since it is larger than the sum of its proper divisors (15678790076446).

21415355101154 is a wasteful number, since it uses less digits than its factorization.

21415355101154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16527.

The product of its (nonzero) digits is 60000, while the sum is 38.

The spelling of 21415355101154 in words is "twenty-one trillion, four hundred fifteen billion, three hundred fifty-five million, one hundred one thousand, one hundred fifty-four".