662534137444 has 9 divisors (see below), whose sum is σ = 1159437589401. Its totient is φ = 331266254760.

The previous prime is 662534137439. The next prime is 662534137553. The reversal of 662534137444 is 444731435266.

The square root of 662534137444 is 813962.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 448313271844 + 214220865600 = 669562^2 + 462840^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1424434 + ... + 1831414.

Almost surely, 2^662534137444 is an apocalyptic number.

662534137444 is the 813962-nd square number.

It is an amenable number.

662534137444 is a deficient number, since it is larger than the sum of its proper divisors (496903451957).

662534137444 is an frugal number, since it uses more digits than its factorization.

662534137444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813966 (or 406983 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 49.

Multiplying 662534137444 by its sum of digits (49), we get a square (32464172734756 = 5697734²).

The spelling of 662534137444 in words is "six hundred sixty-two billion, five hundred thirty-four million, one hundred thirty-seven thousand, four hundred forty-four".