60491731890 has 128 divisors (see below), whose sum is σ = 161050042368. Its totient is φ = 14472944640.

The previous prime is 60491731889. The next prime is 60491731919. The reversal of 60491731890 is 9813719406.

It is a happy number.

60491731890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1030717 + ... + 1087823.

It is an arithmetic number, because the mean of its divisors is an integer number (1258203456).

Almost surely, 2^60491731890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 60491731890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80525021184).

60491731890 is an abundant number, since it is smaller than the sum of its proper divisors (100558310478).

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

60491731890 is a wasteful number, since it uses less digits than its factorization.

60491731890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57232.

The product of its (nonzero) digits is 326592, while the sum is 48.

The spelling of 60491731890 in words is "sixty billion, four hundred ninety-one million, seven hundred thirty-one thousand, eight hundred ninety".