139238922050 has 54 divisors (see below), whose sum is σ = 261857294283. Its totient is φ = 55084480640.

The previous prime is 139238922037. The next prime is 139238922091. The reversal of 139238922050 is 50229832931.

It can be written as a sum of positive squares in 5 ways, for example, as 10686361 + 139228235689 = 3269^2 + 373133^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=263855.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139238921992 and 139238922010.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 298155917 + ... + 298156383.

Almost surely, 2^139238922050 is an apocalyptic number.

139238922050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139238922050 is a deficient number, since it is larger than the sum of its proper divisors (122618372233).

139238922050 is an frugal number, since it uses more digits than its factorization.

139238922050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172 (or 587 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 139238922050 in words is "one hundred thirty-nine billion, two hundred thirty-eight million, nine hundred twenty-two thousand, fifty".