61834192728 has 128 divisors (see below), whose sum is σ = 195370513920. Its totient is φ = 15840783360.

The previous prime is 61834192727. The next prime is 61834192753. The reversal of 61834192728 is 82729143816.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61834192727) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94275 + ... + 364082.

It is an arithmetic number, because the mean of its divisors is an integer number (1526332140).

Almost surely, 2^61834192728 is an apocalyptic number.

It is an amenable number.

61834192728 is an abundant number, since it is smaller than the sum of its proper divisors (133536321192).

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

61834192728 is a wasteful number, since it uses less digits than its factorization.

61834192728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458457 (or 458453 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 51.

The spelling of 61834192728 in words is "sixty-one billion, eight hundred thirty-four million, one hundred ninety-two thousand, seven hundred twenty-eight".