61446159428 has 6 divisors (see below), whose sum is σ = 107530779006. Its totient is φ = 30723079712.

The previous prime is 61446159409. The next prime is 61446159433. The reversal of 61446159428 is 82495164416.

It can be written as a sum of positive squares in only one way, i.e., 61344391684 + 101767744 = 247678^2 + 10088^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7680769925 + ... + 7680769932.

It is an arithmetic number, because the mean of its divisors is an integer number (17921796501).

Almost surely, 2^61446159428 is an apocalyptic number.

It is an amenable number.

61446159428 is a deficient number, since it is larger than the sum of its proper divisors (46084619578).

61446159428 is a wasteful number, since it uses less digits than its factorization.

61446159428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15361539861 (or 15361539859 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 50.

The spelling of 61446159428 in words is "sixty-one billion, four hundred forty-six million, one hundred fifty-nine thousand, four hundred twenty-eight".