1146721635978 has 16 divisors (see below), whose sum is σ = 2298739912896. Its totient is φ = 381357771840.

The previous prime is 1146721635967. The next prime is 1146721636069. The reversal of 1146721635978 is 8795361276411.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220690558 + ... + 220695753.

It is an arithmetic number, because the mean of its divisors is an integer number (143671244556).

Almost surely, 2^{1146721635978} is an apocalyptic number.

1146721635978 is an abundant number, since it is smaller than the sum of its proper divisors (1152018276918).

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

1146721635978 is a wasteful number, since it uses less digits than its factorization.

1146721635978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441386749.

The product of its digits is 15240960, while the sum is 60.

The spelling of 1146721635978 in words is "one trillion, one hundred forty-six billion, seven hundred twenty-one million, six hundred thirty-five thousand, nine hundred seventy-eight".