1293678920578 has 64 divisors (see below), whose sum is σ = 2254571231616. Its totient is φ = 550211200000.

The previous prime is 1293678920539. The next prime is 1293678920641. The reversal of 1293678920578 is 8750298763921.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106900728 + ... + 106912828.

It is an arithmetic number, because the mean of its divisors is an integer number (35227675494).

Almost surely, 2^{1293678920578} is an apocalyptic number.

1293678920578 is a deficient number, since it is larger than the sum of its proper divisors (960892311038).

1293678920578 is a wasteful number, since it uses less digits than its factorization.

1293678920578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13779.

The product of its (nonzero) digits is 91445760, while the sum is 67.

The spelling of 1293678920578 in words is "one trillion, two hundred ninety-three billion, six hundred seventy-eight million, nine hundred twenty thousand, five hundred seventy-eight".