130644988551 has 48 divisors (see below), whose sum is σ = 247656963840. Its totient is φ = 64295544960.

The previous prime is 130644988549. The next prime is 130644988561. The reversal of 130644988551 is 155889446031.

It is a happy number.

130644988551 is a `hidden beast` number, since 1 + 3 + 0 + 6 + 4 + 4 + 9 + 88 + 551 = 666.

It is not a de Polignac number, because 130644988551 - 2¹ = 130644988549 is a prime.

It is a super-2 number, since 2×130644988551² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130644988561) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4947910 + ... + 4974243.

It is an arithmetic number, because the mean of its divisors is an integer number (5159520080).

Almost surely, 2^130644988551 is an apocalyptic number.

130644988551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

130644988551 is a deficient number, since it is larger than the sum of its proper divisors (117011975289).

130644988551 is a wasteful number, since it uses less digits than its factorization.

130644988551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9922196 (or 9922193 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 54.

The spelling of 130644988551 in words is "one hundred thirty billion, six hundred forty-four million, nine hundred eighty-eight thousand, five hundred fifty-one".