20531242150402 has 8 divisors (see below), whose sum is σ = 31256517900816. Its totient is φ = 10112402850132.

The previous prime is 20531242150399. The next prime is 20531242150417. The reversal of 20531242150402 is 20405124213502.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76609112368 + ... + 76609112635.

It is an arithmetic number, because the mean of its divisors is an integer number (3907064737602).

Almost surely, 2^{20531242150402} is an apocalyptic number.

20531242150402 is a deficient number, since it is larger than the sum of its proper divisors (10725275750414).

20531242150402 is a wasteful number, since it uses less digits than its factorization.

20531242150402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153218225072.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 20531242150402 its reverse (20405124213502), we get a palindrome (40936366363904).

The spelling of 20531242150402 in words is "twenty trillion, five hundred thirty-one billion, two hundred forty-two million, one hundred fifty thousand, four hundred two".