34020543402 has 64 divisors (see below), whose sum is σ = 77752924800. Its totient is φ = 11018280960.

The previous prime is 34020543379. The next prime is 34020543409. The reversal of 34020543402 is 20434502043.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (34020543409) 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, 1465002 + ... + 1488042.

It is an arithmetic number, because the mean of its divisors is an integer number (1214889450).

Almost surely, 2^34020543402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 34020543402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38876462400).

34020543402 is an abundant number, since it is smaller than the sum of its proper divisors (43732381398).

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

34020543402 is a wasteful number, since it uses less digits than its factorization.

34020543402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23828 (or 23822 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The spelling of 34020543402 in words is "thirty-four billion, twenty million, five hundred forty-three thousand, four hundred two".