109561796428 has 12 divisors (see below), whose sum is σ = 219123592912. Its totient is φ = 46955055600.

The previous prime is 109561796413. The next prime is 109561796437. The reversal of 109561796428 is 824697165901.

109561796428 is an admirable 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, 1956460623 + ... + 1956460678.

Almost surely, 2^109561796428 is an apocalyptic number.

It is an amenable number.

109561796428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

109561796428 is a wasteful number, since it uses less digits than its factorization.

109561796428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3912921312 (or 3912921310 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 58.

The spelling of 109561796428 in words is "one hundred nine billion, five hundred sixty-one million, seven hundred ninety-six thousand, four hundred twenty-eight".