61554514652655 has 16 divisors (see below), whose sum is σ = 98492306071680. Its totient is φ = 32827380272288.

The previous prime is 61554514652611. The next prime is 61554514652663. The reversal of 61554514652655 is 55625641545516.

It is a cyclic number.

It is not a de Polignac number, because 61554514652655 - 2¹⁶ = 61554514587119 is a prime.

It is a congruent number.

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, 105587697 + ... + 106169066.

It is an arithmetic number, because the mean of its divisors is an integer number (6155769129480).

Almost surely, 2^{61554514652655} is an apocalyptic number.

61554514652655 is a deficient number, since it is larger than the sum of its proper divisors (36937791419025).

61554514652655 is a wasteful number, since it uses less digits than its factorization.

61554514652655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211776150.

The product of its digits is 108000000, while the sum is 60.

The spelling of 61554514652655 in words is "sixty-one trillion, five hundred fifty-four billion, five hundred fourteen million, six hundred fifty-two thousand, six hundred fifty-five".