101272288491 has 24 divisors (see below), whose sum is σ = 165083358960. Its totient is φ = 59260689600.

The previous prime is 101272288483. The next prime is 101272288499. The reversal of 101272288491 is 194882272101.

101272288491 is a `hidden beast` number, since 1 + 0 + 12 + 72 + 2 + 88 + 491 = 666.

It is an interprime number because it is at equal distance from previous prime (101272288483) and next prime (101272288499).

It is not a de Polignac number, because 101272288491 - 2³ = 101272288483 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (101272288499) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17634240 + ... + 17639981.

It is an arithmetic number, because the mean of its divisors is an integer number (6878473290).

Almost surely, 2^101272288491 is an apocalyptic number.

101272288491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

101272288491 is a deficient number, since it is larger than the sum of its proper divisors (63811070469).

101272288491 is a wasteful number, since it uses less digits than its factorization.

101272288491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35274267 (or 35274264 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The spelling of 101272288491 in words is "one hundred one billion, two hundred seventy-two million, two hundred eighty-eight thousand, four hundred ninety-one".