50122663642 has 4 divisors (see below), whose sum is σ = 75183995466. Its totient is φ = 25061331820.

The previous prime is 50122663621. The next prime is 50122663649. The reversal of 50122663642 is 24636622105.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 48915726561 + 1206937081 = 221169^2 + 34741^2 .

It is not an unprimeable number, because it can be changed into a prime (50122663649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12530665909 + ... + 12530665912.

Almost surely, 2^50122663642 is an apocalyptic number.

50122663642 is a deficient number, since it is larger than the sum of its proper divisors (25061331824).

50122663642 is a wasteful number, since it uses less digits than its factorization.

50122663642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25061331823.

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 50122663642 in words is "fifty billion, one hundred twenty-two million, six hundred sixty-three thousand, six hundred forty-two".