61428733146 has 48 divisors (see below), whose sum is σ = 145997455968. Its totient is φ = 18511912800.

The previous prime is 61428733117. The next prime is 61428733151. The reversal of 61428733146 is 64133782416.

61428733146 is a `hidden beast` number, since 614 + 28 + 7 + 3 + 3 + 1 + 4 + 6 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 821196 + ... + 892871.

It is an arithmetic number, because the mean of its divisors is an integer number (3041613666).

Almost surely, 2^61428733146 is an apocalyptic number.

61428733146 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

61428733146 is an abundant number, since it is smaller than the sum of its proper divisors (84568722822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61428733146 is a wasteful number, since it uses less digits than its factorization.

61428733146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714267 (or 1714264 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The spelling of 61428733146 in words is "sixty-one billion, four hundred twenty-eight million, seven hundred thirty-three thousand, one hundred forty-six".