100642511847 has 16 divisors (see below), whose sum is σ = 138851389440. Its totient is φ = 64765458912.

The previous prime is 100642511843. The next prime is 100642511911. The reversal of 100642511847 is 748115246001.

It is not a de Polignac number, because 100642511847 - 2² = 100642511843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100642511843) 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, 218898 + ... + 499200.

It is an arithmetic number, because the mean of its divisors is an integer number (8678211840).

Almost surely, 2^100642511847 is an apocalyptic number.

100642511847 is a deficient number, since it is larger than the sum of its proper divisors (38208877593).

100642511847 is a wasteful number, since it uses less digits than its factorization.

100642511847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284462.

The product of its (nonzero) digits is 53760, while the sum is 39.

Adding to 100642511847 its reverse (748115246001), we get a palindrome (848757757848).

The spelling of 100642511847 in words is "one hundred billion, six hundred forty-two million, five hundred eleven thousand, eight hundred forty-seven".