51005165670 has 32 divisors (see below), whose sum is σ = 136013775840. Its totient is φ = 13601377440.

The previous prime is 51005165669. The next prime is 51005165681. The reversal of 51005165670 is 7656150015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94453741 + ... + 94454280.

It is an arithmetic number, because the mean of its divisors is an integer number (4250430495).

Almost surely, 2^51005165670 is an apocalyptic number.

51005165670 is an abundant number, since it is smaller than the sum of its proper divisors (85008610170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51005165670 is a wasteful number, since it uses less digits than its factorization.

51005165670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188908037 (or 188908031 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 36.

The spelling of 51005165670 in words is "fifty-one billion, five million, one hundred sixty-five thousand, six hundred seventy".