61904230293 has 4 divisors (see below), whose sum is σ = 82538973728. Its totient is φ = 41269486860.

The previous prime is 61904230273. The next prime is 61904230307. The reversal of 61904230293 is 39203240916.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 61904230293 - 2⁹ = 61904229781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61904230273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10317371713 + ... + 10317371718.

It is an arithmetic number, because the mean of its divisors is an integer number (20634743432).

Almost surely, 2^61904230293 is an apocalyptic number.

It is an amenable number.

61904230293 is a deficient number, since it is larger than the sum of its proper divisors (20634743435).

61904230293 is a wasteful number, since it uses less digits than its factorization.

61904230293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20634743434.

The product of its (nonzero) digits is 69984, while the sum is 39.

The spelling of 61904230293 in words is "sixty-one billion, nine hundred four million, two hundred thirty thousand, two hundred ninety-three".