103545135621 has 8 divisors (see below), whose sum is σ = 153400200960. Its totient is φ = 69030090396.

The previous prime is 103545135619. The next prime is 103545135643. The reversal of 103545135621 is 126531545301.

103545135621 is a `hidden beast` number, since 10 + 3 + 5 + 4 + 5 + 13 + 5 + 621 = 666.

It is not a de Polignac number, because 103545135621 - 2¹ = 103545135619 is a prime.

It is a super-3 number, since 3×103545135621³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103545135691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1917502485 + ... + 1917502538.

It is an arithmetic number, because the mean of its divisors is an integer number (19175025120).

Almost surely, 2^103545135621 is an apocalyptic number.

It is an amenable number.

103545135621 is a deficient number, since it is larger than the sum of its proper divisors (49855065339).

103545135621 is an equidigital number, since it uses as much as digits as its factorization.

103545135621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3835005032 (or 3835005026 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 103545135621 in words is "one hundred three billion, five hundred forty-five million, one hundred thirty-five thousand, six hundred twenty-one".