61154247168 has 120 divisors (see below), whose sum is σ = 201709018368. Its totient is φ = 17472632832.

The previous prime is 61154247137. The next prime is 61154247257. The reversal of 61154247168 is 86174245116.

61154247168 is a `hidden beast` number, since 6 + 1 + 1 + 542 + 47 + 1 + 68 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 915696 + ... + 980207.

Almost surely, 2^61154247168 is an apocalyptic number.

It is an amenable number.

61154247168 is an abundant number, since it is smaller than the sum of its proper divisors (140554771200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61154247168 is a wasteful number, since it uses less digits than its factorization.

61154247168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1895934 (or 1895915 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The spelling of 61154247168 in words is "sixty-one billion, one hundred fifty-four million, two hundred forty-seven thousand, one hundred sixty-eight".