61107728253 has 16 divisors (see below), whose sum is σ = 95721197376. Its totient is φ = 34186141440.

The previous prime is 61107728207. The next prime is 61107728263. The reversal of 61107728253 is 35282770116.

It is not a de Polignac number, because 61107728253 - 2¹² = 61107724157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61107728263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71220700 + ... + 71221557.

It is an arithmetic number, because the mean of its divisors is an integer number (5982574836).

Almost surely, 2^61107728253 is an apocalyptic number.

It is an amenable number.

61107728253 is a deficient number, since it is larger than the sum of its proper divisors (34613469123).

61107728253 is a wasteful number, since it uses less digits than its factorization.

61107728253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142442284.

The product of its (nonzero) digits is 141120, while the sum is 42.

The spelling of 61107728253 in words is "sixty-one billion, one hundred seven million, seven hundred twenty-eight thousand, two hundred fifty-three".