1201722736456 has 16 divisors (see below), whose sum is σ = 2458069233840. Its totient is φ = 546237607440.

The previous prime is 1201722736451. The next prime is 1201722736471. The reversal of 1201722736456 is 6546372271021.

It is not an unprimeable number, because it can be changed into a prime (1201722736451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6827970006 + ... + 6827970181.

It is an arithmetic number, because the mean of its divisors is an integer number (153629327115).

Almost surely, 2^{1201722736456} is an apocalyptic number.

It is an amenable number.

1201722736456 is an abundant number, since it is smaller than the sum of its proper divisors (1256346497384).

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

1201722736456 is a wasteful number, since it uses less digits than its factorization.

1201722736456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13655940204 (or 13655940200 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 46.

The spelling of 1201722736456 in words is "one trillion, two hundred one billion, seven hundred twenty-two million, seven hundred thirty-six thousand, four hundred fifty-six".