7661556122 has 32 divisors (see below), whose sum is σ = 12591993024. Its totient is φ = 3467318400.

The previous prime is 7661556103. The next prime is 7661556131. The reversal of 7661556122 is 2216551667.

It is a self number, because there is not a number n which added to its sum of digits gives 7661556122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8676293 + ... + 8677175.

It is an arithmetic number, because the mean of its divisors is an integer number (393499782).

Almost surely, 2^7661556122 is an apocalyptic number.

7661556122 is a deficient number, since it is larger than the sum of its proper divisors (4930436902).

7661556122 is a wasteful number, since it uses less digits than its factorization.

7661556122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2174.

The product of its digits is 151200, while the sum is 41.

The square root of 7661556122 is about 87530.3154455643. The cubic root of 7661556122 is about 1971.3890005775.

It can be divided in two parts, 766155 and 6122, that added together give a palindrome (772277).

The spelling of 7661556122 in words is "seven billion, six hundred sixty-one million, five hundred fifty-six thousand, one hundred twenty-two".