1321875964502 has 16 divisors (see below), whose sum is σ = 2020821841152. Its totient is φ = 648276046080.

The previous prime is 1321875964499. The next prime is 1321875964531. The reversal of 1321875964502 is 2054695781231.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1479323 + ... + 2198214.

It is an arithmetic number, because the mean of its divisors is an integer number (126301365072).

It is a 1-persistent number, because it is pandigital, but 2⋅1321875964502 = 2643751929004 is not.

Almost surely, 2^{1321875964502} is an apocalyptic number.

1321875964502 is a deficient number, since it is larger than the sum of its proper divisors (698945876650).

1321875964502 is a wasteful number, since it uses less digits than its factorization.

1321875964502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3680983.

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 1321875964502 in words is "one trillion, three hundred twenty-one billion, eight hundred seventy-five million, nine hundred sixty-four thousand, five hundred two".