212555057757 has 16 divisors (see below), whose sum is σ = 340940444160. Its totient is φ = 115067399472.

The previous prime is 212555057753. The next prime is 212555057761. The reversal of 212555057757 is 757750555212.

It is an interprime number because it is at equal distance from previous prime (212555057753) and next prime (212555057761).

It is not a de Polignac number, because 212555057757 - 2² = 212555057753 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212555057753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 266359323 + ... + 266360120.

It is an arithmetic number, because the mean of its divisors is an integer number (21308777760).

Almost surely, 2^212555057757 is an apocalyptic number.

It is an amenable number.

212555057757 is a deficient number, since it is larger than the sum of its proper divisors (128385386403).

212555057757 is a wasteful number, since it uses less digits than its factorization.

212555057757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532719472.

The product of its (nonzero) digits is 4287500, while the sum is 51.

The spelling of 212555057757 in words is "two hundred twelve billion, five hundred fifty-five million, fifty-seven thousand, seven hundred fifty-seven".