57155220611 has 8 divisors (see below), whose sum is σ = 59910862704. Its totient is φ = 54464417280.

The previous prime is 57155220601. The next prime is 57155220613. The reversal of 57155220611 is 11602255175.

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 57155220611 - 2¹⁸ = 57154958467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57155220613) 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, 16207886 + ... + 16211411.

It is an arithmetic number, because the mean of its divisors is an integer number (7488857838).

Almost surely, 2^57155220611 is an apocalyptic number.

57155220611 is a deficient number, since it is larger than the sum of its proper divisors (2755642093).

57155220611 is a wasteful number, since it uses less digits than its factorization.

57155220611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32419381.

The product of its (nonzero) digits is 21000, while the sum is 35.

Adding to 57155220611 its reverse (11602255175), we get a palindrome (68757475786).

The spelling of 57155220611 in words is "fifty-seven billion, one hundred fifty-five million, two hundred twenty thousand, six hundred eleven".