50213981551 has 8 divisors (see below), whose sum is σ = 50321436624. Its totient is φ = 50106571200.

The previous prime is 50213981549. The next prime is 50213981621. The reversal of 50213981551 is 15518931205.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 50213981551 - 2¹ = 50213981549 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 (50213981651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3182955 + ... + 3198691.

It is an arithmetic number, because the mean of its divisors is an integer number (6290179578).

Almost surely, 2^50213981551 is an apocalyptic number.

50213981551 is a deficient number, since it is larger than the sum of its proper divisors (107455073).

50213981551 is a wasteful number, since it uses less digits than its factorization.

50213981551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22361.

The product of its (nonzero) digits is 54000, while the sum is 40.

The spelling of 50213981551 in words is "fifty billion, two hundred thirteen million, nine hundred eighty-one thousand, five hundred fifty-one".