1972784010136 has 32 divisors (see below), whose sum is σ = 3860315094240. Its totient is φ = 943378213888.

The previous prime is 1972784010133. The next prime is 1972784010149. The reversal of 1972784010136 is 6310104872791.

It is a self number, because there is not a number n which added to its sum of digits gives 1972784010136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1972784010133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 653190 + ... + 2090986.

It is an arithmetic number, because the mean of its divisors is an integer number (120634846695).

Almost surely, 2^{1972784010136} is an apocalyptic number.

It is an amenable number.

1972784010136 is a deficient number, since it is larger than the sum of its proper divisors (1887531084104).

1972784010136 is a wasteful number, since it uses less digits than its factorization.

1972784010136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445283 (or 1445279 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 49.

The spelling of 1972784010136 in words is "one trillion, nine hundred seventy-two billion, seven hundred eighty-four million, ten thousand, one hundred thirty-six".