3858660720431 has 4 divisors (see below), whose sum is σ = 4209448058664. Its totient is φ = 3507873382200.

The previous prime is 3858660720377. The next prime is 3858660720451. The reversal of 3858660720431 is 1340270668583.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 3858660720431 - 2¹⁸ = 3858660458287 is a prime.

It is a super-2 number, since 2×3858660720431² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3858660720451) 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, 175393669100 + ... + 175393669121.

It is an arithmetic number, because the mean of its divisors is an integer number (1052362014666).

Almost surely, 2^{3858660720431} is an apocalyptic number.

3858660720431 is a deficient number, since it is larger than the sum of its proper divisors (350787338233).

3858660720431 is a wasteful number, since it uses less digits than its factorization.

3858660720431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350787338232.

The product of its (nonzero) digits is 5806080, while the sum is 53.

The spelling of 3858660720431 in words is "three trillion, eight hundred fifty-eight billion, six hundred sixty million, seven hundred twenty thousand, four hundred thirty-one".