61522874107 has 4 divisors (see below), whose sum is σ = 61596203760. Its totient is φ = 61449544456.

The previous prime is 61522874089. The next prime is 61522874117. The reversal of 61522874107 is 70147822516.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61522874107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61522874117) 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, 36663568 + ... + 36665245.

It is an arithmetic number, because the mean of its divisors is an integer number (15399050940).

Almost surely, 2^61522874107 is an apocalyptic number.

61522874107 is a deficient number, since it is larger than the sum of its proper divisors (73329653).

61522874107 is an equidigital number, since it uses as much as digits as its factorization.

61522874107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73329652.

The product of its (nonzero) digits is 188160, while the sum is 43.

The spelling of 61522874107 in words is "sixty-one billion, five hundred twenty-two million, eight hundred seventy-four thousand, one hundred seven".