50971213979136 has 800 divisors, whose sum is σ = 168151580467200. Its totient is φ = 15243746918400.

The previous prime is 50971213979107. The next prime is 50971213979137. The reversal of 50971213979136 is 63197931217905.

50971213979136 is a `hidden beast` number, since 5 + 0 + 9 + 7 + 121 + 397 + 91 + 36 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50971213979137) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 11529338206 + ... + 11529342626.

It is an arithmetic number, because the mean of its divisors is an integer number (210189475584).

Almost surely, 2^{50971213979136} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50971213979136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84075790233600).

50971213979136 is an abundant number, since it is smaller than the sum of its proper divisors (117180366488064).

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

50971213979136 is a wasteful number, since it uses less digits than its factorization.

50971213979136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4788 (or 4763 counting only the distinct ones).

The product of its (nonzero) digits is 19289340, while the sum is 63.

The spelling of 50971213979136 in words is "fifty trillion, nine hundred seventy-one billion, two hundred thirteen million, nine hundred seventy-nine thousand, one hundred thirty-six".