61354566501 has 8 divisors (see below), whose sum is σ = 82394622240. Its totient is φ = 40608777552.

The previous prime is 61354566491. The next prime is 61354566517. The reversal of 61354566501 is 10566545316.

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

It is not a de Polignac number, because 61354566501 - 2⁷ = 61354566373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61354566551) 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, 73566210 + ... + 73567043.

It is an arithmetic number, because the mean of its divisors is an integer number (10299327780).

Almost surely, 2^61354566501 is an apocalyptic number.

It is an amenable number.

61354566501 is a deficient number, since it is larger than the sum of its proper divisors (21040055739).

61354566501 is a wasteful number, since it uses less digits than its factorization.

61354566501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147133395.

The product of its (nonzero) digits is 324000, while the sum is 42.

The spelling of 61354566501 in words is "sixty-one billion, three hundred fifty-four million, five hundred sixty-six thousand, five hundred one".