30495191040 has 520 divisors, whose sum is σ = 113034227328. Its totient is φ = 7856455680.

The previous prime is 30495191021. The next prime is 30495191047. The reversal of 30495191040 is 4019159403.

It is a happy number.

30495191040 is a `hidden beast` number, since 30 + 4 + 9 + 519 + 104 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 30495190986 and 30495191004.

It is not an unprimeable number, because it can be changed into a prime (30495191047) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 51424984 + ... + 51425576.

Almost surely, 2^30495191040 is an apocalyptic number.

30495191040 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 30495191040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56517113664).

30495191040 is an abundant number, since it is smaller than the sum of its proper divisors (82539036288).

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

30495191040 is an equidigital number, since it uses as much as digits as its factorization.

30495191040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665 (or 634 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The spelling of 30495191040 in words is "thirty billion, four hundred ninety-five million, one hundred ninety-one thousand, forty".