787644557042 has 32 divisors (see below), whose sum is σ = 1361325588480. Its totient is φ = 334794252240.

The previous prime is 787644556961. The next prime is 787644557059. The reversal of 787644557042 is 240755446787.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5474567 + ... + 5616597.

It is an arithmetic number, because the mean of its divisors is an integer number (42541424640).

Almost surely, 2^787644557042 is an apocalyptic number.

787644557042 is a deficient number, since it is larger than the sum of its proper divisors (573681031438).

787644557042 is a wasteful number, since it uses less digits than its factorization.

787644557042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145286.

The product of its (nonzero) digits is 52684800, while the sum is 59.

The spelling of 787644557042 in words is "seven hundred eighty-seven billion, six hundred forty-four million, five hundred fifty-seven thousand, forty-two".