172763603551 has 16 divisors (see below), whose sum is σ = 215415129600. Its totient is φ = 134607523680.

The previous prime is 172763603513. The next prime is 172763603557. The reversal of 172763603551 is 155306367271.

It is not a de Polignac number, because 172763603551 - 2¹¹ = 172763601503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172763603557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 700525 + ... + 914473.

It is an arithmetic number, because the mean of its divisors is an integer number (13463445600).

Almost surely, 2^172763603551 is an apocalyptic number.

172763603551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

172763603551 is a deficient number, since it is larger than the sum of its proper divisors (42651526049).

172763603551 is a wasteful number, since it uses less digits than its factorization.

172763603551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224454.

The product of its (nonzero) digits is 793800, while the sum is 46.

The spelling of 172763603551 in words is "one hundred seventy-two billion, seven hundred sixty-three million, six hundred three thousand, five hundred fifty-one".