1201920472655 has 32 divisors (see below), whose sum is σ = 1735191244800. Its totient is φ = 780756855552.

The previous prime is 1201920472609. The next prime is 1201920472679. The reversal of 1201920472655 is 5562740291021.

It is a cyclic number.

It is not a de Polignac number, because 1201920472655 - 2²⁶ = 1201853363791 is a prime.

It is a super-2 number, since 2×1201920472655² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

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, 19056011 + ... + 19118979.

It is an arithmetic number, because the mean of its divisors is an integer number (54224726400).

Almost surely, 2^{1201920472655} is an apocalyptic number.

1201920472655 is a deficient number, since it is larger than the sum of its proper divisors (533270772145).

1201920472655 is a wasteful number, since it uses less digits than its factorization.

1201920472655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91703.

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 1201920472655 in words is "one trillion, two hundred one billion, nine hundred twenty million, four hundred seventy-two thousand, six hundred fifty-five".