20002351542 has 16 divisors (see below), whose sum is σ = 40296709872. Its totient is φ = 6618782720.

The previous prime is 20002351493. The next prime is 20002351543. The reversal of 20002351542 is 24515320002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002351543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12166059 + ... + 12167702.

It is an arithmetic number, because the mean of its divisors is an integer number (2518544367).

Almost surely, 2^20002351542 is an apocalyptic number.

20002351542 is an abundant number, since it is smaller than the sum of its proper divisors (20294358330).

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

20002351542 is a wasteful number, since it uses less digits than its factorization.

20002351542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24333903.

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 20002351542 its reverse (24515320002), we get a palindrome (44517671544).

The spelling of 20002351542 in words is "twenty billion, two million, three hundred fifty-one thousand, five hundred forty-two".