30907495620 has 144 divisors (see below), whose sum is σ = 97383948480. Its totient is φ = 8228532096.

The previous prime is 30907495613. The next prime is 30907495673. The reversal of 30907495620 is 2659470903.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3168711 + ... + 3178449.

It is an arithmetic number, because the mean of its divisors is an integer number (676277420).

Almost surely, 2^30907495620 is an apocalyptic number.

30907495620 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30907495620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48691974240).

30907495620 is an abundant number, since it is smaller than the sum of its proper divisors (66476452860).

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

30907495620 is a wasteful number, since it uses less digits than its factorization.

30907495620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10416 (or 10402 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The spelling of 30907495620 in words is "thirty billion, nine hundred seven million, four hundred ninety-five thousand, six hundred twenty".