21554036614 has 24 divisors (see below), whose sum is σ = 35630380800. Its totient is φ = 9771666960.

The previous prime is 21554036597. The next prime is 21554036617. The reversal of 21554036614 is 41663045512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21554036617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23589 + ... + 208960.

It is an arithmetic number, because the mean of its divisors is an integer number (1484599200).

Almost surely, 2^21554036614 is an apocalyptic number.

21554036614 is a deficient number, since it is larger than the sum of its proper divisors (14076344186).

21554036614 is a wasteful number, since it uses less digits than its factorization.

21554036614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232956 (or 232945 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 21554036614 in words is "twenty-one billion, five hundred fifty-four million, thirty-six thousand, six hundred fourteen".