30520420631040 has 80 divisors (see below), whose sum is σ = 97569969729408. Its totient is φ = 8138778832896.

The previous prime is 30520420631003. The next prime is 30520420631111. The reversal of 30520420631040 is 4013602402503.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×30520420631040² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 30520420630989 and 30520420631007.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1986998872 + ... + 1987014231.

Almost surely, 2^{30520420631040} is an apocalyptic number.

30520420631040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30520420631040 is an abundant number, since it is smaller than the sum of its proper divisors (67049549098368).

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

30520420631040 is an equidigital number, since it uses as much as digits as its factorization.

30520420631040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3974013129 (or 3974013113 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The spelling of 30520420631040 in words is "thirty trillion, five hundred twenty billion, four hundred twenty million, six hundred thirty-one thousand, forty".