51010606015 has 4 divisors (see below), whose sum is σ = 61212727224. Its totient is φ = 40808484808.

The previous prime is 51010606013. The next prime is 51010606019. The reversal of 51010606015 is 51060601015.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51010606015 - 2¹ = 51010606013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51010606013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5101060597 + ... + 5101060606.

It is an arithmetic number, because the mean of its divisors is an integer number (15303181806).

Almost surely, 2^51010606015 is an apocalyptic number.

51010606015 is a deficient number, since it is larger than the sum of its proper divisors (10202121209).

51010606015 is a wasteful number, since it uses less digits than its factorization.

51010606015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10202121208.

The product of its (nonzero) digits is 900, while the sum is 25.

Subtracting 51010606015 from its reverse (51060601015), we obtain a triangular number (49995000 = T₉₉₉₉).

The spelling of 51010606015 in words is "fifty-one billion, ten million, six hundred six thousand, fifteen".