61079691543 has 16 divisors (see below), whose sum is σ = 87853616256. Its totient is φ = 37523455200.

The previous prime is 61079691539. The next prime is 61079691593. The reversal of 61079691543 is 34519697016.

It is not a de Polignac number, because 61079691543 - 2² = 61079691539 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61079691593) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1311133 + ... + 1356918.

It is an arithmetic number, because the mean of its divisors is an integer number (5490851016).

Almost surely, 2^61079691543 is an apocalyptic number.

61079691543 is a deficient number, since it is larger than the sum of its proper divisors (26773924713).

61079691543 is a wasteful number, since it uses less digits than its factorization.

61079691543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2668654.

The product of its (nonzero) digits is 1224720, while the sum is 51.

The spelling of 61079691543 in words is "sixty-one billion, seventy-nine million, six hundred ninety-one thousand, five hundred forty-three".