100677434781 has 32 divisors (see below), whose sum is σ = 167448112128. Its totient is φ = 52272397440.

The previous prime is 100677434777. The next prime is 100677434801. The reversal of 100677434781 is 187434776001.

It is not a de Polignac number, because 100677434781 - 2² = 100677434777 is a prime.

It is a super-2 number, since 2×100677434781² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 100677434781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100677434761) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 327990 + ... + 555816.

It is an arithmetic number, because the mean of its divisors is an integer number (5232753504).

Almost surely, 2^100677434781 is an apocalyptic number.

100677434781 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100677434781 is a deficient number, since it is larger than the sum of its proper divisors (66770677347).

100677434781 is a wasteful number, since it uses less digits than its factorization.

100677434781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229761.

The product of its (nonzero) digits is 790272, while the sum is 48.

The spelling of 100677434781 in words is "one hundred billion, six hundred seventy-seven million, four hundred thirty-four thousand, seven hundred eighty-one".