61533616501355 has 32 divisors (see below), whose sum is σ = 74570521688064. Its totient is φ = 48741725362176.

The previous prime is 61533616501321. The next prime is 61533616501369. The reversal of 61533616501355 is 55310561633516.

It is not a de Polignac number, because 61533616501355 - 2¹² = 61533616497259 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 917597987 + ... + 917665043.

It is an arithmetic number, because the mean of its divisors is an integer number (2330328802752).

Almost surely, 2^{61533616501355} is an apocalyptic number.

61533616501355 is a deficient number, since it is larger than the sum of its proper divisors (13036905186709).

61533616501355 is a wasteful number, since it uses less digits than its factorization.

61533616501355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70055.

The product of its (nonzero) digits is 3645000, while the sum is 50.

The spelling of 61533616501355 in words is "sixty-one trillion, five hundred thirty-three billion, six hundred sixteen million, five hundred one thousand, three hundred fifty-five".