63719406993 has 16 divisors (see below), whose sum is σ = 92800578816. Its totient is φ = 38568737040.

The previous prime is 63719406979. The next prime is 63719407013. The reversal of 63719406993 is 39960491736.

It is not a de Polignac number, because 63719406993 - 2¹⁶ = 63719341457 is a prime.

It is a super-3 number, since 3×63719406993³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (63719406923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1200771 + ... + 1252712.

It is an arithmetic number, because the mean of its divisors is an integer number (5800036176).

Almost surely, 2^63719406993 is an apocalyptic number.

It is an amenable number.

63719406993 is a deficient number, since it is larger than the sum of its proper divisors (29081171823).

63719406993 is a wasteful number, since it uses less digits than its factorization.

63719406993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2454284.

The product of its (nonzero) digits is 6613488, while the sum is 57.

The spelling of 63719406993 in words is "sixty-three billion, seven hundred nineteen million, four hundred six thousand, nine hundred ninety-three".