61498046388 has 48 divisors (see below), whose sum is σ = 148687773696. Its totient is φ = 19762618080.

The previous prime is 61498046353. The next prime is 61498046417. The reversal of 61498046388 is 88364089416.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216456 + ... + 412127.

It is an arithmetic number, because the mean of its divisors is an integer number (3097661952).

Almost surely, 2^61498046388 is an apocalyptic number.

It is an amenable number.

61498046388 is an abundant number, since it is smaller than the sum of its proper divisors (87189727308).

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

61498046388 is a wasteful number, since it uses less digits than its factorization.

61498046388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628884 (or 628882 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 57.

The spelling of 61498046388 in words is "sixty-one billion, four hundred ninety-eight million, forty-six thousand, three hundred eighty-eight".