61489419642 has 24 divisors (see below), whose sum is σ = 152259515616. Its totient is φ = 17568405576.

The previous prime is 61489419587. The next prime is 61489419689. The reversal of 61489419642 is 24691498416.

61489419642 is a `hidden beast` number, since 61 + 489 + 41 + 9 + 64 + 2 = 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 11 ways as a sum of consecutive naturals, for example, 244005508 + ... + 244005759.

It is an arithmetic number, because the mean of its divisors is an integer number (6344146484).

Almost surely, 2^61489419642 is an apocalyptic number.

61489419642 is an abundant number, since it is smaller than the sum of its proper divisors (90770095974).

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

61489419642 is a wasteful number, since it uses less digits than its factorization.

61489419642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488011282 (or 488011279 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The spelling of 61489419642 in words is "sixty-one billion, four hundred eighty-nine million, four hundred nineteen thousand, six hundred forty-two".