100132781501 has 4 divisors (see below), whose sum is σ = 100133457600. Its totient is φ = 100132105404.

The previous prime is 100132781479. The next prime is 100132781513. The reversal of 100132781501 is 105187231001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 105187231001 = 1609 ⋅65374289.

It is a cyclic number.

It is not a de Polignac number, because 100132781501 - 2²² = 100128587197 is a prime.

It is a super-2 number, since 2×100132781501² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100132781561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9371 + ... + 447608.

It is an arithmetic number, because the mean of its divisors is an integer number (25033364400).

Almost surely, 2^100132781501 is an apocalyptic number.

It is an amenable number.

100132781501 is a deficient number, since it is larger than the sum of its proper divisors (676099).

100132781501 is an equidigital number, since it uses as much as digits as its factorization.

100132781501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676098.

The product of its (nonzero) digits is 1680, while the sum is 29.

The spelling of 100132781501 in words is "one hundred billion, one hundred thirty-two million, seven hundred eighty-one thousand, five hundred one".