61190678947821 has 8 divisors (see below), whose sum is σ = 86386840867584. Its totient is φ = 38394151496640.

The previous prime is 61190678947799. The next prime is 61190678947841. The reversal of 61190678947821 is 12874987609116.

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

It is not a de Polignac number, because 61190678947821 - 2¹⁹ = 61190678423533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61190678947841) 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, 599908617085 + ... + 599908617186.

It is an arithmetic number, because the mean of its divisors is an integer number (10798355108448).

Almost surely, 2^{61190678947821} is an apocalyptic number.

It is an amenable number.

61190678947821 is a deficient number, since it is larger than the sum of its proper divisors (25196161919763).

61190678947821 is a wasteful number, since it uses less digits than its factorization.

61190678947821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199817234291.

The product of its (nonzero) digits is 73156608, while the sum is 69.

The spelling of 61190678947821 in words is "sixty-one trillion, one hundred ninety billion, six hundred seventy-eight million, nine hundred forty-seven thousand, eight hundred twenty-one".