61219017907 has 8 divisors (see below), whose sum is σ = 63006713280. Its totient is φ = 59456325480.

The previous prime is 61219017901. The next prime is 61219017929. The reversal of 61219017907 is 70971091216.

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 61219017907 - 2¹⁹ = 61218493619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61219017901) 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, 6245769 + ... + 6255562.

It is an arithmetic number, because the mean of its divisors is an integer number (7875839160).

Almost surely, 2^61219017907 is an apocalyptic number.

61219017907 is a deficient number, since it is larger than the sum of its proper divisors (1787695373).

61219017907 is a wasteful number, since it uses less digits than its factorization.

61219017907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12501473.

The product of its (nonzero) digits is 47628, while the sum is 43.

The spelling of 61219017907 in words is "sixty-one billion, two hundred nineteen million, seventeen thousand, nine hundred seven".