283091978507 has 16 divisors (see below), whose sum is σ = 310265303040. Its totient is φ = 256724840352.

The previous prime is 283091978503. The next prime is 283091978509. The reversal of 283091978507 is 705879190382.

It is a cyclic number.

It is not a de Polignac number, because 283091978507 - 2² = 283091978503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (283091978503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 539723 + ... + 926004.

It is an arithmetic number, because the mean of its divisors is an integer number (19391581440).

Almost surely, 2^283091978507 is an apocalyptic number.

283091978507 is a deficient number, since it is larger than the sum of its proper divisors (27173324533).

283091978507 is a wasteful number, since it uses less digits than its factorization.

283091978507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1466002.

The product of its (nonzero) digits is 7620480, while the sum is 59.

The spelling of 283091978507 in words is "two hundred eighty-three billion, ninety-one million, nine hundred seventy-eight thousand, five hundred seven".