109770191615 has 64 divisors (see below), whose sum is σ = 162620193024. Its totient is φ = 69423464448.

The previous prime is 109770191599. The next prime is 109770191617. The reversal of 109770191615 is 516191077901.

It is a cyclic number.

It is not a de Polignac number, because 109770191615 - 2⁴ = 109770191599 is a prime.

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 109770191615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109770191617) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6811247 + ... + 6827343.

It is an arithmetic number, because the mean of its divisors is an integer number (2540940516).

Almost surely, 2^109770191615 is an apocalyptic number.

109770191615 is a deficient number, since it is larger than the sum of its proper divisors (52850001409).

109770191615 is a wasteful number, since it uses less digits than its factorization.

109770191615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16356.

The product of its (nonzero) digits is 119070, while the sum is 47.

The spelling of 109770191615 in words is "one hundred nine billion, seven hundred seventy million, one hundred ninety-one thousand, six hundred fifteen".