1201497785972 has 24 divisors (see below), whose sum is σ = 2293797680832. Its totient is φ = 546128409600.

The previous prime is 1201497785953. The next prime is 1201497785987. The reversal of 1201497785972 is 2795877941021.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5174897 + ... + 5402087.

It is an arithmetic number, because the mean of its divisors is an integer number (95574903368).

Almost surely, 2^{1201497785972} is an apocalyptic number.

It is an amenable number.

1201497785972 is a deficient number, since it is larger than the sum of its proper divisors (1092299894860).

1201497785972 is a wasteful number, since it uses less digits than its factorization.

1201497785972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347399 (or 347397 counting only the distinct ones).

The product of its (nonzero) digits is 17781120, while the sum is 62.

The spelling of 1201497785972 in words is "one trillion, two hundred one billion, four hundred ninety-seven million, seven hundred eighty-five thousand, nine hundred seventy-two".