19635852487696 has 45 divisors (see below), whose sum is σ = 38951306782239. Its totient is φ = 9589230153888.

The previous prime is 19635852487681. The next prime is 19635852487697. The reversal of 19635852487696 is 69678425853691.

The square root of 19635852487696 is 4431236.

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

It is not an unprimeable number, because it can be changed into a prime (19635852487697) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 762159711 + ... + 762185473.

Almost surely, 2^{19635852487696} is an apocalyptic number.

19635852487696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

19635852487696 is the 4431236-th square number.

It is an amenable number.

19635852487696 is a deficient number, since it is larger than the sum of its proper divisors (19315454294543).

19635852487696 is an frugal number, since it uses more digits than its factorization.

19635852487696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51620 (or 25808 counting only the distinct ones).

The product of its digits is 4702924800, while the sum is 79.

The spelling of 19635852487696 in words is "nineteen trillion, six hundred thirty-five billion, eight hundred fifty-two million, four hundred eighty-seven thousand, six hundred ninety-six".