1210745684955 has 16 divisors (see below), whose sum is σ = 1937235227904. Its totient is φ = 645716988000.

The previous prime is 1210745684921. The next prime is 1210745684959. The reversal of 1210745684955 is 5594865470121.

It is not a de Polignac number, because 1210745684955 - 2⁸ = 1210745684699 is a prime.

It is a super-2 number, since 2×1210745684955² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1210745684895 and 1210745684904.

It is not an unprimeable number, because it can be changed into a prime (1210745684959) 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 15 ways as a sum of consecutive naturals, for example, 145359 + ... + 1562888.

It is an arithmetic number, because the mean of its divisors is an integer number (121077201744).

Almost surely, 2^{1210745684955} is an apocalyptic number.

1210745684955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1210745684955 is a deficient number, since it is larger than the sum of its proper divisors (726489542949).

1210745684955 is a wasteful number, since it uses less digits than its factorization.

1210745684955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1755506.

The product of its (nonzero) digits is 12096000, while the sum is 57.

The spelling of 1210745684955 in words is "one trillion, two hundred ten billion, seven hundred forty-five million, six hundred eighty-four thousand, nine hundred fifty-five".