48778442621979 has 32 divisors (see below), whose sum is σ = 75165978240000. Its totient is φ = 27559564437504.

The previous prime is 48778442621969. The next prime is 48778442622023. The reversal of 48778442621979 is 97912624487784.

It is not a de Polignac number, because 48778442621979 - 2⁷ = 48778442621851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (48778442621929) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85782202 + ... + 86348960.

It is an arithmetic number, because the mean of its divisors is an integer number (2348936820000).

Almost surely, 2^{48778442621979} is an apocalyptic number.

48778442621979 is a deficient number, since it is larger than the sum of its proper divisors (26387535618021).

48778442621979 is a wasteful number, since it uses less digits than its factorization.

48778442621979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612907.

The product of its digits is 2731180032, while the sum is 78.

The spelling of 48778442621979 in words is "forty-eight trillion, seven hundred seventy-eight billion, four hundred forty-two million, six hundred twenty-one thousand, nine hundred seventy-nine".