61084988690643 has 12 divisors (see below), whose sum is σ = 91276419882960. Its totient is φ = 39319073180016.

The previous prime is 61084988690597. The next prime is 61084988690651. The reversal of 61084988690643 is 34609688948016.

61084988690643 is a `hidden beast` number, since 6 + 1 + 0 + 8 + 498 + 8 + 6 + 90 + 6 + 43 = 666.

It is not a de Polignac number, because 61084988690643 - 2¹³ = 61084988682451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61084988690443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117021050871 + ... + 117021051392.

It is an arithmetic number, because the mean of its divisors is an integer number (7606368323580).

Almost surely, 2^{61084988690643} is an apocalyptic number.

61084988690643 is a deficient number, since it is larger than the sum of its proper divisors (30191431192317).

61084988690643 is a wasteful number, since it uses less digits than its factorization.

61084988690643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234042102298 (or 234042102295 counting only the distinct ones).

The product of its (nonzero) digits is 429981696, while the sum is 72.

The spelling of 61084988690643 in words is "sixty-one trillion, eighty-four billion, nine hundred eighty-eight million, six hundred ninety thousand, six hundred forty-three".