51267655950 has 48 divisors (see below), whose sum is σ = 145307187840. Its totient is φ = 11718321120.

The previous prime is 51267655921. The next prime is 51267655969. The reversal of 51267655950 is 5955676215.

It is a junction number, because it is equal to n+sod(n) for n = 51267655893 and 51267655902.

It is a congruent 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, 24412120 + ... + 24414219.

It is an arithmetic number, because the mean of its divisors is an integer number (3027233080).

Almost surely, 2^51267655950 is an apocalyptic number.

51267655950 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51267655950 is an abundant number, since it is smaller than the sum of its proper divisors (94039531890).

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

51267655950 is a wasteful number, since it uses less digits than its factorization.

51267655950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48826361 (or 48826356 counting only the distinct ones).

The product of its (nonzero) digits is 2835000, while the sum is 51.

The spelling of 51267655950 in words is "fifty-one billion, two hundred sixty-seven million, six hundred fifty-five thousand, nine hundred fifty".