1940068828257 has 24 divisors (see below), whose sum is σ = 3010196918592. Its totient is φ = 1108201600800.

The previous prime is 1940068828249. The next prime is 1940068828279. The reversal of 1940068828257 is 7528288600491.

It is not a de Polignac number, because 1940068828257 - 2³ = 1940068828249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1940068828257.

It is not an unprimeable number, because it can be changed into a prime (1940068828057) 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, 2035594 + ... + 2832627.

It is an arithmetic number, because the mean of its divisors is an integer number (125424871608).

Almost surely, 2^{1940068828257} is an apocalyptic number.

It is an amenable number.

1940068828257 is a deficient number, since it is larger than the sum of its proper divisors (1070128090335).

1940068828257 is a wasteful number, since it uses less digits than its factorization.

1940068828257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4870949 (or 4870942 counting only the distinct ones).

The product of its (nonzero) digits is 15482880, while the sum is 60.

The spelling of 1940068828257 in words is "one trillion, nine hundred forty billion, sixty-eight million, eight hundred twenty-eight thousand, two hundred fifty-seven".