61407147272 has 16 divisors (see below), whose sum is σ = 115187286060. Its totient is φ = 30690537664.

The previous prime is 61407147247. The next prime is 61407147317. The reversal of 61407147272 is 27274170416.

It can be written as a sum of positive squares in 2 ways, for example, as 61328541316 + 78605956 = 247646^2 + 8866^2 .

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, 1609463 + ... + 1647174.

Almost surely, 2^61407147272 is an apocalyptic number.

It is an amenable number.

61407147272 is a deficient number, since it is larger than the sum of its proper divisors (53780138788).

61407147272 is a wasteful number, since it uses less digits than its factorization.

61407147272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3259000 (or 3258996 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 41.

The spelling of 61407147272 in words is "sixty-one billion, four hundred seven million, one hundred forty-seven thousand, two hundred seventy-two".