63726742051 has 16 divisors (see below), whose sum is σ = 74716012800. Its totient is φ = 53215370208.

The previous prime is 63726742043. The next prime is 63726742061. The reversal of 63726742051 is 15024762736.

It is not a de Polignac number, because 63726742051 - 2³ = 63726742043 is a prime.

It is a super-2 number, since 2×63726742051² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63726741989 and 63726742007.

It is not an unprimeable number, because it can be changed into a prime (63726742031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155041 + ... + 389218.

It is an arithmetic number, because the mean of its divisors is an integer number (4669750800).

Almost surely, 2^63726742051 is an apocalyptic number.

63726742051 is a deficient number, since it is larger than the sum of its proper divisors (10989270749).

63726742051 is a wasteful number, since it uses less digits than its factorization.

63726742051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544698.

The product of its (nonzero) digits is 423360, while the sum is 43.

The spelling of 63726742051 in words is "sixty-three billion, seven hundred twenty-six million, seven hundred forty-two thousand, fifty-one".