499243787078 has 4 divisors (see below), whose sum is σ = 748865680620. Its totient is φ = 249621893538.

The previous prime is 499243786981. The next prime is 499243787101. The reversal of 499243787078 is 870787342994.

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

It is a junction number, because it is equal to n+sod(n) for n = 499243786999 and 499243787017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124810946768 + ... + 124810946771.

It is an arithmetic number, because the mean of its divisors is an integer number (187216420155).

Almost surely, 2^499243787078 is an apocalyptic number.

499243787078 is a deficient number, since it is larger than the sum of its proper divisors (249621893542).

499243787078 is a wasteful number, since it uses less digits than its factorization.

499243787078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249621893541.

The product of its (nonzero) digits is 170698752, while the sum is 68.

The spelling of 499243787078 in words is "four hundred ninety-nine billion, two hundred forty-three million, seven hundred eighty-seven thousand, seventy-eight".