61266017656285 has 32 divisors (see below), whose sum is σ = 80651717647200. Its totient is φ = 44401803264000.

The previous prime is 61266017656271. The next prime is 61266017656309. The reversal of 61266017656285 is 58265671066216.

It can be written as a sum of positive squares in 16 ways, for example, as 15839779126084 + 45426238530201 = 3979922^2 + 6739899^2 .

It is not a de Polignac number, because 61266017656285 - 2⁵ = 61266017656253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15426516 + ... + 18987085.

It is an arithmetic number, because the mean of its divisors is an integer number (2520366176475).

Almost surely, 2^{61266017656285} is an apocalyptic number.

61266017656285 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61266017656285 is a deficient number, since it is larger than the sum of its proper divisors (19385699990915).

61266017656285 is a wasteful number, since it uses less digits than its factorization.

61266017656285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34414129.

The product of its (nonzero) digits is 43545600, while the sum is 61.

The spelling of 61266017656285 in words is "sixty-one trillion, two hundred sixty-six billion, seventeen million, six hundred fifty-six thousand, two hundred eighty-five".