48381779818 has 16 divisors (see below), whose sum is σ = 72927638784. Its totient is φ = 24072824160.

The previous prime is 48381779813. The next prime is 48381779819. The reversal of 48381779818 is 81897718384.

It is a super-2 number, since 2×48381779818² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 48381779818.

It is not an unprimeable number, because it can be changed into a prime (48381779813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314983 + ... + 442693.

It is an arithmetic number, because the mean of its divisors is an integer number (4557977424).

Almost surely, 2^48381779818 is an apocalyptic number.

48381779818 is a deficient number, since it is larger than the sum of its proper divisors (24545858966).

48381779818 is a wasteful number, since it uses less digits than its factorization.

48381779818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128637.

The product of its digits is 21676032, while the sum is 64.

The spelling of 48381779818 in words is "forty-eight billion, three hundred eighty-one million, seven hundred seventy-nine thousand, eight hundred eighteen".