61115919979087 has 8 divisors (see below), whose sum is σ = 62155757105280. Its totient is φ = 60076215322200.

The previous prime is 61115919979031. The next prime is 61115919979111. The reversal of 61115919979087 is 78097991951116.

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 61115919979087 - 2⁴³ = 52319826956879 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 (61115919979007) 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, 32186539 + ... + 34032412.

It is an arithmetic number, because the mean of its divisors is an integer number (7769469638160).

Almost surely, 2^{61115919979087} is an apocalyptic number.

61115919979087 is a deficient number, since it is larger than the sum of its proper divisors (1039837126193).

61115919979087 is a wasteful number, since it uses less digits than its factorization.

61115919979087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66234653.

The product of its (nonzero) digits is 77157360, while the sum is 73.

The spelling of 61115919979087 in words is "sixty-one trillion, one hundred fifteen billion, nine hundred nineteen million, nine hundred seventy-nine thousand, eighty-seven".