57086781406 has 8 divisors (see below), whose sum is σ = 85632314040. Its totient is φ = 28542676728.

The previous prime is 57086781397. The next prime is 57086781419. The reversal of 57086781406 is 60418768075.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×57086781406² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250716 + ... + 420751.

It is an arithmetic number, because the mean of its divisors is an integer number (10704039255).

Almost surely, 2^57086781406 is an apocalyptic number.

57086781406 is a deficient number, since it is larger than the sum of its proper divisors (28545532634).

57086781406 is a wasteful number, since it uses less digits than its factorization.

57086781406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713978.

The product of its (nonzero) digits is 2257920, while the sum is 52.

The spelling of 57086781406 in words is "fifty-seven billion, eighty-six million, seven hundred eighty-one thousand, four hundred six".