1421755332164 has 6 divisors (see below), whose sum is σ = 2488071831294. Its totient is φ = 710877666080.

The previous prime is 1421755332143. The next prime is 1421755332211. The reversal of 1421755332164 is 4612335571241.

It can be written as a sum of positive squares in only one way, i.e., 739135672900 + 682619659264 = 859730^2 + 826208^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177719416517 + ... + 177719416524.

It is an arithmetic number, because the mean of its divisors is an integer number (414678638549).

Almost surely, 2^{1421755332164} is an apocalyptic number.

It is an amenable number.

1421755332164 is a deficient number, since it is larger than the sum of its proper divisors (1066316499130).

1421755332164 is a wasteful number, since it uses less digits than its factorization.

1421755332164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355438833045 (or 355438833043 counting only the distinct ones).

The product of its digits is 604800, while the sum is 44.

The spelling of 1421755332164 in words is "one trillion, four hundred twenty-one billion, seven hundred fifty-five million, three hundred thirty-two thousand, one hundred sixty-four".