61621200489 has 8 divisors (see below), whose sum is σ = 82198305280. Its totient is φ = 41062448016.

The previous prime is 61621200479. The next prime is 61621200503. The reversal of 61621200489 is 98400212616.

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

It is not a de Polignac number, because 61621200489 - 2³² = 57326233193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61621200479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4580242 + ... + 4593675.

It is an arithmetic number, because the mean of its divisors is an integer number (10274788160).

Almost surely, 2^61621200489 is an apocalyptic number.

It is an amenable number.

61621200489 is a deficient number, since it is larger than the sum of its proper divisors (20577104791).

61621200489 is a wasteful number, since it uses less digits than its factorization.

61621200489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9176159.

The product of its (nonzero) digits is 41472, while the sum is 39.

The spelling of 61621200489 in words is "sixty-one billion, six hundred twenty-one million, two hundred thousand, four hundred eighty-nine".