30688480637490 has 32 divisors (see below), whose sum is σ = 79317919187136. Its totient is φ = 7554087541440.

The previous prime is 30688480637483. The next prime is 30688480637497. The reversal of 30688480637490 is 9473608488603.

It is an interprime number because it is at equal distance from previous prime (30688480637483) and next prime (30688480637497).

It is not an unprimeable number, because it can be changed into a prime (30688480637497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39344205556 + ... + 39344206335.

It is an arithmetic number, because the mean of its divisors is an integer number (2478684974598).

Almost surely, 2^{30688480637490} is an apocalyptic number.

30688480637490 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30688480637490 is an abundant number, since it is smaller than the sum of its proper divisors (48629438549646).

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

30688480637490 is a wasteful number, since it uses less digits than its factorization.

30688480637490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78688411914.

The product of its (nonzero) digits is 167215104, while the sum is 66.

The spelling of 30688480637490 in words is "thirty trillion, six hundred eighty-eight billion, four hundred eighty million, six hundred thirty-seven thousand, four hundred ninety".