30555078100 has 18 divisors (see below), whose sum is σ = 66304519694. Its totient is φ = 12222031200.

The previous prime is 30555078091. The next prime is 30555078109. The reversal of 30555078100 is 187055503.

It is an interprime number because it is at equal distance from previous prime (30555078091) and next prime (30555078109).

It can be written as a sum of positive squares in 3 ways, for example, as 189227536 + 30365850564 = 13756^2 + 174258^2 .

It is a super-2 number, since 2×30555078100² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30555078109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 152775291 + ... + 152775490.

Almost surely, 2^30555078100 is an apocalyptic number.

It is an amenable number.

30555078100 is an abundant number, since it is smaller than the sum of its proper divisors (35749441594).

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

30555078100 is a wasteful number, since it uses less digits than its factorization.

30555078100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305550795 (or 305550788 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 34.

The spelling of 30555078100 in words is "thirty billion, five hundred fifty-five million, seventy-eight thousand, one hundred".