4685793657981 has 4 divisors (see below), whose sum is σ = 6247724877312. Its totient is φ = 3123862438652.

The previous prime is 4685793657953. The next prime is 4685793658027. The reversal of 4685793657981 is 1897563975864.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4685793657981 - 2¹⁸ = 4685793395837 is a prime.

It is a super-2 number, since 2×4685793657981² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4685793657897 and 4685793657906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4685793657911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 780965609661 + ... + 780965609666.

It is an arithmetic number, because the mean of its divisors is an integer number (1561931219328).

Almost surely, 2^{4685793657981} is an apocalyptic number.

It is an amenable number.

4685793657981 is a deficient number, since it is larger than the sum of its proper divisors (1561931219331).

4685793657981 is a wasteful number, since it uses less digits than its factorization.

4685793657981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561931219330.

The product of its digits is 2743372800, while the sum is 78.

The spelling of 4685793657981 in words is "four trillion, six hundred eighty-five billion, seven hundred ninety-three million, six hundred fifty-seven thousand, nine hundred eighty-one".