101206512045 has 64 divisors (see below), whose sum is σ = 190046208000. Its totient is φ = 51020746560.

The previous prime is 101206512041. The next prime is 101206512053. The reversal of 101206512045 is 540215602101.

101206512045 is a `hidden beast` number, since 1 + 0 + 1 + 2 + 0 + 651 + 2 + 0 + 4 + 5 = 666.

It is not a de Polignac number, because 101206512045 - 2² = 101206512041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101206512041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 101245 + ... + 461154.

It is an arithmetic number, because the mean of its divisors is an integer number (2969472000).

Almost surely, 2^101206512045 is an apocalyptic number.

101206512045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

101206512045 is a deficient number, since it is larger than the sum of its proper divisors (88839695955).

101206512045 is a wasteful number, since it uses less digits than its factorization.

101206512045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562487 (or 562481 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The spelling of 101206512045 in words is "one hundred one billion, two hundred six million, five hundred twelve thousand, forty-five".