50018968490 has 16 divisors (see below), whose sum is σ = 91510113960. Its totient is φ = 19679593920.

The previous prime is 50018968487. The next prime is 50018968513. The reversal of 50018968490 is 9486981005.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 24450638689 + 25568329801 = 156367^2 + 159901^2 .

It is a super-2 number, since 2×50018968490² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40998545 + ... + 40999764.

Almost surely, 2^50018968490 is an apocalyptic number.

50018968490 is a deficient number, since it is larger than the sum of its proper divisors (41491145470).

50018968490 is a wasteful number, since it uses less digits than its factorization.

50018968490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81998377.

The product of its (nonzero) digits is 622080, while the sum is 50.

The spelling of 50018968490 in words is "fifty billion, eighteen million, nine hundred sixty-eight thousand, four hundred ninety".