61101666541 has 8 divisors (see below), whose sum is σ = 62760075264. Its totient is φ = 59443626960.

The previous prime is 61101666529. The next prime is 61101666547. The reversal of 61101666541 is 14566610116.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61101666541 - 2¹⁵ = 61101633773 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

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 61101666541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61101666547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261396 + ... + 436498.

It is an arithmetic number, because the mean of its divisors is an integer number (7845009408).

Almost surely, 2^61101666541 is an apocalyptic number.

It is an amenable number.

61101666541 is a deficient number, since it is larger than the sum of its proper divisors (1658408723).

61101666541 is a wasteful number, since it uses less digits than its factorization.

61101666541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184571.

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 61101666541 in words is "sixty-one billion, one hundred one million, six hundred sixty-six thousand, five hundred forty-one".