10111561655 has 16 divisors (see below), whose sum is σ = 13385965824. Its totient is φ = 7284875520.

The previous prime is 10111561643. The next prime is 10111561657. The reversal of 10111561655 is 55616511101.

It is not a de Polignac number, because 10111561655 - 2¹² = 10111557559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10111561657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1894439 + ... + 1899768.

It is an arithmetic number, because the mean of its divisors is an integer number (836622864).

Almost surely, 2^10111561655 is an apocalyptic number.

10111561655 is a deficient number, since it is larger than the sum of its proper divisors (3274404169).

10111561655 is a wasteful number, since it uses less digits than its factorization.

10111561655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3794266.

The product of its (nonzero) digits is 4500, while the sum is 32.

The spelling of 10111561655 in words is "ten billion, one hundred eleven million, five hundred sixty-one thousand, six hundred fifty-five".