61513365153 has 16 divisors (see below), whose sum is σ = 82111651776. Its totient is φ = 40962028800.

The previous prime is 61513365103. The next prime is 61513365157. The reversal of 61513365153 is 35156331516.

It is not a de Polignac number, because 61513365153 - 2¹⁴ = 61513348769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61513365157) 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, 14640453 + ... + 14644653.

It is an arithmetic number, because the mean of its divisors is an integer number (5131978236).

Almost surely, 2^61513365153 is an apocalyptic number.

It is an amenable number.

61513365153 is a deficient number, since it is larger than the sum of its proper divisors (20598286623).

61513365153 is a wasteful number, since it uses less digits than its factorization.

61513365153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8624.

The product of its digits is 121500, while the sum is 39.

Adding to 61513365153 its reverse (35156331516), we get a palindrome (96669696669).

The spelling of 61513365153 in words is "sixty-one billion, five hundred thirteen million, three hundred sixty-five thousand, one hundred fifty-three".