21016465467886 has 32 divisors (see below), whose sum is σ = 36304009581312. Its totient is φ = 8938113737280.

The previous prime is 21016465467799. The next prime is 21016465467917. The reversal of 21016465467886 is 68876456461012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121208625 + ... + 121381891.

It is an arithmetic number, because the mean of its divisors is an integer number (1134500299416).

Almost surely, 2^{21016465467886} is an apocalyptic number.

21016465467886 is a deficient number, since it is larger than the sum of its proper divisors (15287544113426).

21016465467886 is a wasteful number, since it uses less digits than its factorization.

21016465467886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239544.

The product of its (nonzero) digits is 92897280, while the sum is 64.

The spelling of 21016465467886 in words is "twenty-one trillion, sixteen billion, four hundred sixty-five million, four hundred sixty-seven thousand, eight hundred eighty-six".