61198995782 has 8 divisors (see below), whose sum is σ = 96629993400. Its totient is φ = 28988997984.

The previous prime is 61198995779. The next prime is 61198995791. The reversal of 61198995782 is 28759989116.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 805249907 + ... + 805249982.

It is an arithmetic number, because the mean of its divisors is an integer number (12078749175).

Almost surely, 2^61198995782 is an apocalyptic number.

61198995782 is a deficient number, since it is larger than the sum of its proper divisors (35430997618).

61198995782 is a wasteful number, since it uses less digits than its factorization.

61198995782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610499910.

The product of its digits is 19595520, while the sum is 65.

The spelling of 61198995782 in words is "sixty-one billion, one hundred ninety-eight million, nine hundred ninety-five thousand, seven hundred eighty-two".