57720135511 has 8 divisors (see below), whose sum is σ = 60761041920. Its totient is φ = 54679529592.

The previous prime is 57720135509. The next prime is 57720135521. The reversal of 57720135511 is 11553102775.

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

It is a cyclic number.

It is not a de Polignac number, because 57720135511 - 2¹ = 57720135509 is a prime.

It is a super-2 number, since 2×57720135511² (a number of 22 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 (57720135521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394506 + ... + 520648.

It is an arithmetic number, because the mean of its divisors is an integer number (7595130240).

Almost surely, 2^57720135511 is an apocalyptic number.

57720135511 is a deficient number, since it is larger than the sum of its proper divisors (3040906409).

57720135511 is a wasteful number, since it uses less digits than its factorization.

57720135511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150245.

The product of its (nonzero) digits is 36750, while the sum is 37.

The spelling of 57720135511 in words is "fifty-seven billion, seven hundred twenty million, one hundred thirty-five thousand, five hundred eleven".