1553173957696 has 21 divisors (see below), whose sum is σ = 3082099356871. Its totient is φ = 776581993792.

The previous prime is 1553173957663. The next prime is 1553173957747. The reversal of 1553173957696 is 6967593713551.

The square root of 1553173957696 is 1246264.

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

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, 9892221 + ... + 10048003.

Almost surely, 2^{1553173957696} is an apocalyptic number.

1553173957696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1553173957696 is the 1246264-th square number.

It is an amenable number.

1553173957696 is a deficient number, since it is larger than the sum of its proper divisors (1528925399175).

1553173957696 is an frugal number, since it uses more digits than its factorization.

1553173957696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311578 (or 155785 counting only the distinct ones).

The product of its digits is 160744500, while the sum is 67.

The spelling of 1553173957696 in words is "one trillion, five hundred fifty-three billion, one hundred seventy-three million, nine hundred fifty-seven thousand, six hundred ninety-six".