50438586390 has 64 divisors (see below), whose sum is σ = 128244280320. Its totient is φ = 12652090880.

The previous prime is 50438586389. The next prime is 50438586397. The reversal of 50438586390 is 9368583405.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50438586397) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 927781 + ... + 980639.

It is an arithmetic number, because the mean of its divisors is an integer number (2003816880).

Almost surely, 2^50438586390 is an apocalyptic number.

50438586390 is an abundant number, since it is smaller than the sum of its proper divisors (77805693930).

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

50438586390 is a wasteful number, since it uses less digits than its factorization.

50438586390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54757.

The product of its (nonzero) digits is 3110400, while the sum is 51.

The spelling of 50438586390 in words is "fifty billion, four hundred thirty-eight million, five hundred eighty-six thousand, three hundred ninety".