61152911287 has 4 divisors (see below), whose sum is σ = 65856981400. Its totient is φ = 56448841176.

The previous prime is 61152911231. The next prime is 61152911333. The reversal of 61152911287 is 78211925116.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 61152911287 - 2¹¹ = 61152909239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61152912287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2352035037 + ... + 2352035062.

It is an arithmetic number, because the mean of its divisors is an integer number (16464245350).

Almost surely, 2^61152911287 is an apocalyptic number.

61152911287 is a deficient number, since it is larger than the sum of its proper divisors (4704070113).

61152911287 is a wasteful number, since it uses less digits than its factorization.

61152911287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4704070112.

The product of its digits is 60480, while the sum is 43.

The spelling of 61152911287 in words is "sixty-one billion, one hundred fifty-two million, nine hundred eleven thousand, two hundred eighty-seven".