61614031144 has 8 divisors (see below), whose sum is σ = 115526308410. Its totient is φ = 30807015568.

The previous prime is 61614031139. The next prime is 61614031163. The reversal of 61614031144 is 44113041616.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 42781958244 + 18832072900 = 206838^2 + 137230^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3850876939 + ... + 3850876954.

Almost surely, 2^61614031144 is an apocalyptic number.

It is an amenable number.

61614031144 is a deficient number, since it is larger than the sum of its proper divisors (53912277266).

61614031144 is a wasteful number, since it uses less digits than its factorization.

61614031144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7701753899 (or 7701753895 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 61614031144 in words is "sixty-one billion, six hundred fourteen million, thirty-one thousand, one hundred forty-four".