845842340377540 has 48 divisors (see below), whose sum is σ = 1937834552553984. Its totient is φ = 307565279609600.

The previous prime is 845842340377523. The next prime is 845842340377597. The reversal of 845842340377540 is 45773043248548.

It is a happy number.

It is a hoax number, since the sum of its digits (64) coincides with the sum of the digits of its distinct prime factors.

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, 81025921 + ... + 90867400.

It is an arithmetic number, because the mean of its divisors is an integer number (40371553178208).

Almost surely, 2^{845842340377540} is an apocalyptic number.

It is an amenable number.

845842340377540 is an abundant number, since it is smaller than the sum of its proper divisors (1091992212176444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

845842340377540 is a wasteful number, since it uses less digits than its factorization.

845842340377540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171915708 (or 171915706 counting only the distinct ones).

The product of its (nonzero) digits is 361267200, while the sum is 64.

The spelling of 845842340377540 in words is "eight hundred forty-five trillion, eight hundred forty-two billion, three hundred forty million, three hundred seventy-seven thousand, five hundred forty".