101381826645 has 24 divisors (see below), whose sum is σ = 191703818592. Its totient is φ = 49154824800.

The previous prime is 101381826629. The next prime is 101381826659. The reversal of 101381826645 is 546628183101.

101381826645 is a `hidden beast` number, since 1 + 0 + 1 + 381 + 8 + 266 + 4 + 5 = 666.

It is not a de Polignac number, because 101381826645 - 2⁴ = 101381826629 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 101381826645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102405391 + ... + 102406380.

It is an arithmetic number, because the mean of its divisors is an integer number (7987659108).

Almost surely, 2^101381826645 is an apocalyptic number.

101381826645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

101381826645 is a deficient number, since it is larger than the sum of its proper divisors (90321991947).

101381826645 is a wasteful number, since it uses less digits than its factorization.

101381826645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204811793 (or 204811790 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 101381826645 in words is "one hundred one billion, three hundred eighty-one million, eight hundred twenty-six thousand, six hundred forty-five".