61043615253 has 8 divisors (see below), whose sum is σ = 90434985600. Its totient is φ = 40695743484.

The previous prime is 61043615251. The next prime is 61043615287. The reversal of 61043615253 is 35251634016.

61043615253 is a `hidden beast` number, since 6 + 10 + 4 + 3 + 615 + 25 + 3 = 666.

It is not a de Polignac number, because 61043615253 - 2¹ = 61043615251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61043615251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1130437293 + ... + 1130437346.

It is an arithmetic number, because the mean of its divisors is an integer number (11304373200).

Almost surely, 2^61043615253 is an apocalyptic number.

It is an amenable number.

61043615253 is a deficient number, since it is larger than the sum of its proper divisors (29391370347).

61043615253 is a wasteful number, since it uses less digits than its factorization.

61043615253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2260874648 (or 2260874642 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 61043615253 in words is "sixty-one billion, forty-three million, six hundred fifteen thousand, two hundred fifty-three".