30771493590 has 64 divisors (see below), whose sum is σ = 75794374656. Its totient is φ = 7991004672.

The previous prime is 30771493531. The next prime is 30771493631. The reversal of 30771493590 is 9539417703.

It is a happy number.

It is a super-2 number, since 2×30771493590² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 399339 + ... + 470121.

It is an arithmetic number, because the mean of its divisors is an integer number (1184287104).

Almost surely, 2^30771493590 is an apocalyptic number.

30771493590 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30771493590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37897187328).

30771493590 is an abundant number, since it is smaller than the sum of its proper divisors (45022881066).

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

30771493590 is a wasteful number, since it uses less digits than its factorization.

30771493590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71173.

The product of its (nonzero) digits is 714420, while the sum is 48.

The spelling of 30771493590 in words is "thirty billion, seven hundred seventy-one million, four hundred ninety-three thousand, five hundred ninety".