106506511651 has 4 divisors (see below), whose sum is σ = 106559057592. Its totient is φ = 106453965712.

The previous prime is 106506511637. The next prime is 106506511733. The reversal of 106506511651 is 156115605601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 156115605601 = 97 ⋅1609439233.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-106506511651 is a prime.

It is a super-2 number, since 2×106506511651² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 106506511651.

It is not an unprimeable number, because it can be changed into a prime (106506511621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26269930 + ... + 26273983.

It is an arithmetic number, because the mean of its divisors is an integer number (26639764398).

Almost surely, 2^106506511651 is an apocalyptic number.

106506511651 is a deficient number, since it is larger than the sum of its proper divisors (52545941).

106506511651 is an equidigital number, since it uses as much as digits as its factorization.

106506511651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52545940.

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 106506511651 in words is "one hundred six billion, five hundred six million, five hundred eleven thousand, six hundred fifty-one".