61571340266253 has 16 divisors (see below), whose sum is σ = 83923259627136. Its totient is φ = 40141269858240.

The previous prime is 61571340266239. The next prime is 61571340266263. The reversal of 61571340266253 is 35266204317516.

It is not a de Polignac number, because 61571340266253 - 2¹³ = 61571340258061 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61571340266196 and 61571340266205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61571340266263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 972382825 + ... + 972446142.

It is an arithmetic number, because the mean of its divisors is an integer number (5245203726696).

Almost surely, 2^{61571340266253} is an apocalyptic number.

It is an amenable number.

61571340266253 is a deficient number, since it is larger than the sum of its proper divisors (22351919360883).

61571340266253 is a wasteful number, since it uses less digits than its factorization.

61571340266253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1944829204.

The product of its (nonzero) digits is 5443200, while the sum is 51.

The spelling of 61571340266253 in words is "sixty-one trillion, five hundred seventy-one billion, three hundred forty million, two hundred sixty-six thousand, two hundred fifty-three".