61847357121 has 48 divisors (see below), whose sum is σ = 107046051840. Its totient is φ = 33966488160.

The previous prime is 61847357113. The next prime is 61847357149. The reversal of 61847357121 is 12175374816.

61847357121 is a `hidden beast` number, since 6 + 1 + 8 + 4 + 73 + 571 + 2 + 1 = 666.

61847357121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61847357121 - 2³ = 61847357113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61847357101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 671521 + ... + 758046.

It is an arithmetic number, because the mean of its divisors is an integer number (2230126080).

Almost surely, 2^61847357121 is an apocalyptic number.

It is an amenable number.

61847357121 is a deficient number, since it is larger than the sum of its proper divisors (45198694719).

61847357121 is a wasteful number, since it uses less digits than its factorization.

61847357121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1429626 (or 1429623 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The spelling of 61847357121 in words is "sixty-one billion, eight hundred forty-seven million, three hundred fifty-seven thousand, one hundred twenty-one".