20355101622402 has 32 divisors (see below), whose sum is σ = 40841070213888. Its totient is φ = 6763223565696.

The previous prime is 20355101622397. The next prime is 20355101622407. The reversal of 20355101622402 is 20422610155302.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20355101622397) and next prime (20355101622407).

It is not an unprimeable number, because it can be changed into a prime (20355101622407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157956148 + ... + 158084960.

It is an arithmetic number, because the mean of its divisors is an integer number (1276283444184).

Almost surely, 2^{20355101622402} is an apocalyptic number.

20355101622402 is an abundant number, since it is smaller than the sum of its proper divisors (20485968591486).

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

20355101622402 is a wasteful number, since it uses less digits than its factorization.

20355101622402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213274.

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 20355101622402 its reverse (20422610155302), we get a palindrome (40777711777704).

The spelling of 20355101622402 in words is "twenty trillion, three hundred fifty-five billion, one hundred one million, six hundred twenty-two thousand, four hundred two".