61236442787 has 8 divisors (see below), whose sum is σ = 69417830160. Its totient is φ = 53550897120.

The previous prime is 61236442777. The next prime is 61236442801. The reversal of 61236442787 is 78724463216.

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 61236442787 - 2¹⁴ = 61236426403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61236442777) 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, 123960164 + ... + 123960657.

It is an arithmetic number, because the mean of its divisors is an integer number (8677228770).

Almost surely, 2^61236442787 is an apocalyptic number.

61236442787 is a deficient number, since it is larger than the sum of its proper divisors (8181387373).

61236442787 is a wasteful number, since it uses less digits than its factorization.

61236442787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247920853.

The product of its digits is 2709504, while the sum is 50.

The spelling of 61236442787 in words is "sixty-one billion, two hundred thirty-six million, four hundred forty-two thousand, seven hundred eighty-seven".