207845178442 has 32 divisors (see below), whose sum is σ = 358106572800. Its totient is φ = 89478774000.

The previous prime is 207845178413. The next prime is 207845178523. The reversal of 207845178442 is 244871548702.

It is a self number, because there is not a number n which added to its sum of digits gives 207845178442.

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, 1545159 + ... + 1674277.

It is an arithmetic number, because the mean of its divisors is an integer number (11190830400).

Almost surely, 2^207845178442 is an apocalyptic number.

207845178442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

207845178442 is a deficient number, since it is larger than the sum of its proper divisors (150261394358).

207845178442 is a wasteful number, since it uses less digits than its factorization.

207845178442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133002.

The product of its (nonzero) digits is 4014080, while the sum is 52.

The spelling of 207845178442 in words is "two hundred seven billion, eight hundred forty-five million, one hundred seventy-eight thousand, four hundred forty-two".