1201061431857 has 12 divisors (see below), whose sum is σ = 1862870792496. Its totient is φ = 686320818120.

The previous prime is 1201061431841. The next prime is 1201061431873. The reversal of 1201061431857 is 7581341601021.

It is an interprime number because it is at equal distance from previous prime (1201061431841) and next prime (1201061431873).

It is not a de Polignac number, because 1201061431857 - 2⁴ = 1201061431841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201061431457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4085242819 + ... + 4085243112.

It is an arithmetic number, because the mean of its divisors is an integer number (155239232708).

Almost surely, 2^{1201061431857} is an apocalyptic number.

It is an amenable number.

1201061431857 is a deficient number, since it is larger than the sum of its proper divisors (661809360639).

1201061431857 is an equidigital number, since it uses as much as digits as its factorization.

1201061431857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8170485948 (or 8170485941 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 39.

The spelling of 1201061431857 in words is "one trillion, two hundred one billion, sixty-one million, four hundred thirty-one thousand, eight hundred fifty-seven".