61143863152 has 20 divisors (see below), whose sum is σ = 118486690920. Its totient is φ = 30566652608.

The previous prime is 61143863119. The next prime is 61143863167. The reversal of 61143863152 is 25136834116.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233527 + ... + 420502.

It is an arithmetic number, because the mean of its divisors is an integer number (5924334546).

Almost surely, 2^61143863152 is an apocalyptic number.

It is an amenable number.

61143863152 is a deficient number, since it is larger than the sum of its proper divisors (57342827768).

61143863152 is a wasteful number, since it uses less digits than its factorization.

61143863152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659880 (or 659874 counting only the distinct ones).

The product of its digits is 103680, while the sum is 40.

The spelling of 61143863152 in words is "sixty-one billion, one hundred forty-three million, eight hundred sixty-three thousand, one hundred fifty-two".