106651510655 has 4 divisors (see below), whose sum is σ = 127981812792. Its totient is φ = 85321208520.

The previous prime is 106651510631. The next prime is 106651510687. The reversal of 106651510655 is 556015156601.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 106651510655 - 2²² = 106647316351 is a prime.

It is a super-2 number, since 2×106651510655² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10665151061 + ... + 10665151070.

It is an arithmetic number, because the mean of its divisors is an integer number (31995453198).

Almost surely, 2^106651510655 is an apocalyptic number.

106651510655 is a deficient number, since it is larger than the sum of its proper divisors (21330302137).

106651510655 is an equidigital number, since it uses as much as digits as its factorization.

106651510655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21330302136.

The product of its (nonzero) digits is 135000, while the sum is 41.

The spelling of 106651510655 in words is "one hundred six billion, six hundred fifty-one million, five hundred ten thousand, six hundred fifty-five".