100987543111 has 32 divisors (see below), whose sum is σ = 128347283456. Its totient is φ = 77297328000.

The previous prime is 100987543099. The next prime is 100987543123. The reversal of 100987543111 is 111345789001.

100987543111 = T₁ + T₂ + ... + T₈₄₆₁.

100987543111 is a nontrivial binomial coefficient, being equal to C(8463, 3).

It is an interprime number because it is at equal distance from previous prime (100987543099) and next prime (100987543123).

It is a 7-Lehmer number, since φ(100987543111) divides (100987543111-1)⁷.

It is a cyclic number.

It is not a de Polignac number, because 100987543111 - 2⁵ = 100987543079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100987543171) by changing a digit.

It is the 8461-st tetrahedral number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11931421 + ... + 11939881.

It is an arithmetic number, because the mean of its divisors is an integer number (4010852608).

Almost surely, 2^100987543111 is an apocalyptic number.

100987543111 is a deficient number, since it is larger than the sum of its proper divisors (27359740345).

100987543111 is a wasteful number, since it uses less digits than its factorization.

100987543111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12743.

The product of its (nonzero) digits is 30240, while the sum is 40.

The spelling of 100987543111 in words is "one hundred billion, nine hundred eighty-seven million, five hundred forty-three thousand, one hundred eleven".