50918691000440 has 64 divisors (see below), whose sum is σ = 115303958784000. Its totient is φ = 20236578913408.

The previous prime is 50918691000427. The next prime is 50918691000547. The reversal of 50918691000440 is 4400019681905.

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, 13462361 + ... + 16824759.

It is an arithmetic number, because the mean of its divisors is an integer number (1801624356000).

Almost surely, 2^{50918691000440} is an apocalyptic number.

It is an amenable number.

50918691000440 is an abundant number, since it is smaller than the sum of its proper divisors (64385267783560).

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

50918691000440 is a wasteful number, since it uses less digits than its factorization.

50918691000440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3364844 (or 3364840 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 47.

The spelling of 50918691000440 in words is "fifty trillion, nine hundred eighteen billion, six hundred ninety-one million, four hundred forty", and thus it is an aban number.