42780650497 has 8 divisors (see below), whose sum is σ = 46527624360. Its totient is φ = 39098841600.

The previous prime is 42780650461. The next prime is 42780650503. The reversal of 42780650497 is 79405608724.

It can be written as a sum of positive squares in 4 ways, for example, as 24154133056 + 18626517441 = 155416^2 + 136479^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42780650497 - 2¹⁵ = 42780617729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42780650197) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 16289872 + ... + 16292497.

It is an arithmetic number, because the mean of its divisors is an integer number (5815953045).

Almost surely, 2^42780650497 is an apocalyptic number.

It is an amenable number.

42780650497 is a deficient number, since it is larger than the sum of its proper divisors (3746973863).

42780650497 is a wasteful number, since it uses less digits than its factorization.

42780650497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32582483.

The product of its (nonzero) digits is 3386880, while the sum is 52.

The spelling of 42780650497 in words is "forty-two billion, seven hundred eighty million, six hundred fifty thousand, four hundred ninety-seven".