106612511557 has 2 divisors, whose sum is σ = 106612511558. Its totient is φ = 106612511556.

The previous prime is 106612511503. The next prime is 106612511563. The reversal of 106612511557 is 755115216601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87643234116 + 18969277441 = 296046^2 + 137729^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-106612511557 is a prime.

It is a super-2 number, since 2×106612511557² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (106612521557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53306255778 + 53306255779.

It is an arithmetic number, because the mean of its divisors is an integer number (53306255779).

Almost surely, 2^106612511557 is an apocalyptic number.

It is an amenable number.

106612511557 is a deficient number, since it is larger than the sum of its proper divisors (1).

106612511557 is an equidigital number, since it uses as much as digits as its factorization.

106612511557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63000, while the sum is 40.

The spelling of 106612511557 in words is "one hundred six billion, six hundred twelve million, five hundred eleven thousand, five hundred fifty-seven".