61787845923 has 8 divisors (see below), whose sum is σ = 82774239936. Its totient is φ = 40996674600.

The previous prime is 61787845919. The next prime is 61787845937. The reversal of 61787845923 is 32954878716.

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

It is not a de Polignac number, because 61787845923 - 2² = 61787845919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61787845943) 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, 48804933 + ... + 48806198.

It is an arithmetic number, because the mean of its divisors is an integer number (10346779992).

Almost surely, 2^61787845923 is an apocalyptic number.

61787845923 is a deficient number, since it is larger than the sum of its proper divisors (20986394013).

61787845923 is a wasteful number, since it uses less digits than its factorization.

61787845923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97611345.

The product of its digits is 20321280, while the sum is 60.

The spelling of 61787845923 in words is "sixty-one billion, seven hundred eighty-seven million, eight hundred forty-five thousand, nine hundred twenty-three".