49778488972 has 6 divisors (see below), whose sum is σ = 87112355708. Its totient is φ = 24889244484.

The previous prime is 49778488939. The next prime is 49778488999. The reversal of 49778488972 is 27988487794.

It is a junction number, because it is equal to n+sod(n) for n = 49778488895 and 49778488904.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6222311118 + ... + 6222311125.

Almost surely, 2^49778488972 is an apocalyptic number.

It is an amenable number.

49778488972 is a deficient number, since it is larger than the sum of its proper divisors (37333866736).

49778488972 is a wasteful number, since it uses less digits than its factorization.

49778488972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12444622247 (or 12444622245 counting only the distinct ones).

The product of its digits is 455196672, while the sum is 73.

It can be divided in two parts, 497784 and 88972, that added together give a square (586756 = 766²).

The spelling of 49778488972 in words is "forty-nine billion, seven hundred seventy-eight million, four hundred eighty-eight thousand, nine hundred seventy-two".