30520256235105 has 192 divisors, whose sum is σ = 61683118818048. Its totient is φ = 12772279296000.

The previous prime is 30520256235101. The next prime is 30520256235121. The reversal of 30520256235105 is 50153265202503.

It is a happy number.

It is not a de Polignac number, because 30520256235105 - 2² = 30520256235101 is a prime.

It is a super-2 number, since 2×30520256235105² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (30520256235101) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 558777757 + ... + 558832373.

It is an arithmetic number, because the mean of its divisors is an integer number (321266243844).

Almost surely, 2^{30520256235105} is an apocalyptic number.

30520256235105 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30520256235105 is an abundant number, since it is smaller than the sum of its proper divisors (31162862582943).

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

30520256235105 is a wasteful number, since it uses less digits than its factorization.

30520256235105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55136 (or 55129 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 39.

The spelling of 30520256235105 in words is "thirty trillion, five hundred twenty billion, two hundred fifty-six million, two hundred thirty-five thousand, one hundred five".