30475746642 has 64 divisors (see below), whose sum is σ = 68286265344. Its totient is φ = 8987509440.

The previous prime is 30475746617. The next prime is 30475746647. The reversal of 30475746642 is 24664757403.

It is a super-2 number, since 2×30475746642² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30475746591 and 30475746600.

It is not an unprimeable number, because it can be changed into a prime (30475746647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 766743 + ... + 805509.

It is an arithmetic number, because the mean of its divisors is an integer number (1066972896).

Almost surely, 2^30475746642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30475746642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34143132672).

30475746642 is an abundant number, since it is smaller than the sum of its proper divisors (37810518702).

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

30475746642 is a wasteful number, since it uses less digits than its factorization.

30475746642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39103.

The product of its (nonzero) digits is 3386880, while the sum is 48.

The spelling of 30475746642 in words is "thirty billion, four hundred seventy-five million, seven hundred forty-six thousand, six hundred forty-two".