1961982453051 has 24 divisors (see below), whose sum is σ = 2836226840304. Its totient is φ = 1306949273280.

The previous prime is 1961982453037. The next prime is 1961982453107. The reversal of 1961982453051 is 1503542891691.

1961982453051 is a `hidden beast` number, since 1 + 9 + 6 + 1 + 98 + 245 + 305 + 1 = 666.

It is not a de Polignac number, because 1961982453051 - 2²⁶ = 1961915344187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1961982433051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62208156 + ... + 62239686.

It is an arithmetic number, because the mean of its divisors is an integer number (118176118346).

Almost surely, 2^{1961982453051} is an apocalyptic number.

1961982453051 is a deficient number, since it is larger than the sum of its proper divisors (874244387253).

1961982453051 is a wasteful number, since it uses less digits than its factorization.

1961982453051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36811 (or 36808 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 54.

The spelling of 1961982453051 in words is "one trillion, nine hundred sixty-one billion, nine hundred eighty-two million, four hundred fifty-three thousand, fifty-one".