50401978540 has 24 divisors (see below), whose sum is σ = 109493954640. Its totient is φ = 19465591488.

The previous prime is 50401978519. The next prime is 50401978559. The reversal of 50401978540 is 4587910405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43449402 + ... + 43450561.

It is an arithmetic number, because the mean of its divisors is an integer number (4562248110).

Almost surely, 2^50401978540 is an apocalyptic number.

It is an amenable number.

50401978540 is an abundant number, since it is smaller than the sum of its proper divisors (59091976100).

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

50401978540 is a wasteful number, since it uses less digits than its factorization.

50401978540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86900001 (or 86899999 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 43.

The spelling of 50401978540 in words is "fifty billion, four hundred one million, nine hundred seventy-eight thousand, five hundred forty".