61511550793 has 8 divisors (see below), whose sum is σ = 76689725760. Its totient is φ = 47931078480.

The previous prime is 61511550787. The next prime is 61511550827. The reversal of 61511550793 is 39705511516.

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 61511550793 - 2⁵ = 61511550761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61511550733) 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, 399425578 + ... + 399425731.

It is an arithmetic number, because the mean of its divisors is an integer number (9586215720).

Almost surely, 2^61511550793 is an apocalyptic number.

It is an amenable number.

61511550793 is a deficient number, since it is larger than the sum of its proper divisors (15178174967).

61511550793 is a wasteful number, since it uses less digits than its factorization.

61511550793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798851327.

The product of its (nonzero) digits is 141750, while the sum is 43.

The spelling of 61511550793 in words is "sixty-one billion, five hundred eleven million, five hundred fifty thousand, seven hundred ninety-three".