1973974075857 has 12 divisors (see below), whose sum is σ = 3258623871360. Its totient is φ = 1127985186168.

The previous prime is 1973974075823. The next prime is 1973974075873. The reversal of 1973974075857 is 7585704793791.

1973974075857 is a `hidden beast` number, since 1 + 9 + 7 + 39 + 7 + 4 + 0 + 7 + 585 + 7 = 666.

It is not a de Polignac number, because 1973974075857 - 2¹¹ = 1973974073809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1973974075817) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15666460857 + ... + 15666460982.

It is an arithmetic number, because the mean of its divisors is an integer number (271551989280).

Almost surely, 2^{1973974075857} is an apocalyptic number.

It is an amenable number.

1973974075857 is a deficient number, since it is larger than the sum of its proper divisors (1284649795503).

1973974075857 is a wasteful number, since it uses less digits than its factorization.

1973974075857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31332921852 (or 31332921849 counting only the distinct ones).

The product of its (nonzero) digits is 466754400, while the sum is 72.

The spelling of 1973974075857 in words is "one trillion, nine hundred seventy-three billion, nine hundred seventy-four million, seventy-five thousand, eight hundred fifty-seven".