1961614358955 has 32 divisors (see below), whose sum is σ = 3487601140800. Its totient is φ = 1046108307456.

The previous prime is 1961614358953. The next prime is 1961614358959. The reversal of 1961614358955 is 5598534161691.

1961614358955 is a `hidden beast` number, since 1 + 9 + 6 + 1 + 6 + 1 + 43 + 589 + 5 + 5 = 666.

It is not a de Polignac number, because 1961614358955 - 2¹ = 1961614358953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1961614358892 and 1961614358901.

It is not an unprimeable number, because it can be changed into a prime (1961614358953) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1067817 + ... + 2250213.

It is an arithmetic number, because the mean of its divisors is an integer number (108987535650).

Almost surely, 2^{1961614358955} is an apocalyptic number.

1961614358955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1961614358955 is a deficient number, since it is larger than the sum of its proper divisors (1525986781845).

1961614358955 is a wasteful number, since it uses less digits than its factorization.

1961614358955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194700 (or 1194694 counting only the distinct ones).

The product of its digits is 34992000, while the sum is 63.

The spelling of 1961614358955 in words is "one trillion, nine hundred sixty-one billion, six hundred fourteen million, three hundred fifty-eight thousand, nine hundred fifty-five".