61051066615515 has 16 divisors (see below), whose sum is σ = 97895452124448. Its totient is φ = 32489320348416.

The previous prime is 61051066615481. The next prime is 61051066615529. The reversal of 61051066615515 is 51551666015016.

It is not a de Polignac number, because 61051066615515 - 2¹⁰ = 61051066614491 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4453024992 + ... + 4453038701.

It is an arithmetic number, because the mean of its divisors is an integer number (6118465757778).

Almost surely, 2^{61051066615515} is an apocalyptic number.

61051066615515 is a deficient number, since it is larger than the sum of its proper divisors (36844385508933).

61051066615515 is a wasteful number, since it uses less digits than its factorization.

61051066615515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8906064158.

The product of its (nonzero) digits is 810000, while the sum is 48.

The spelling of 61051066615515 in words is "sixty-one trillion, fifty-one billion, sixty-six million, six hundred fifteen thousand, five hundred fifteen".