10151621505 has 24 divisors (see below), whose sum is σ = 17598777768. Its totient is φ = 5413387776.

The previous prime is 10151621471. The next prime is 10151621591. The reversal of 10151621505 is 50512615101.

10151621505 is a `hidden beast` number, since 1 + 0 + 151 + 6 + 2 + 1 + 505 = 666.

10151621505 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 500327424 + 9651294081 = 22368^2 + 98241^2 .

It is not a de Polignac number, because 10151621505 - 2⁷ = 10151621377 is a prime.

It is a Curzon 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, 400489 + ... + 425081.

It is an arithmetic number, because the mean of its divisors is an integer number (733282407).

Almost surely, 2^10151621505 is an apocalyptic number.

10151621505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10151621505 is a deficient number, since it is larger than the sum of its proper divisors (7447156263).

10151621505 is a wasteful number, since it uses less digits than its factorization.

10151621505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33777 (or 33774 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 27.

The spelling of 10151621505 in words is "ten billion, one hundred fifty-one million, six hundred twenty-one thousand, five hundred five".