21316035548854 has 16 divisors (see below), whose sum is σ = 33382942094592. Its totient is φ = 10188907976808.

The previous prime is 21316035548851. The next prime is 21316035548869. The reversal of 21316035548854 is 45884553061312.

It is a junction number, because it is equal to n+sod(n) for n = 21316035548795 and 21316035548804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21316035548851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129865284 + ... + 130029319.

It is an arithmetic number, because the mean of its divisors is an integer number (2086433880912).

Almost surely, 2^{21316035548854} is an apocalyptic number.

21316035548854 is a deficient number, since it is larger than the sum of its proper divisors (12066906545738).

21316035548854 is a wasteful number, since it uses less digits than its factorization.

21316035548854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259896411.

The product of its (nonzero) digits is 13824000, while the sum is 55.

The spelling of 21316035548854 in words is "twenty-one trillion, three hundred sixteen billion, thirty-five million, five hundred forty-eight thousand, eight hundred fifty-four".