20351630571342 has 96 divisors (see below), whose sum is σ = 47010321238272. Its totient is φ = 5753796512256.

The previous prime is 20351630571319. The next prime is 20351630571343. The reversal of 20351630571342 is 24317503615302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 20351630571294 and 20351630571303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20351630571343) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 246696033 + ... + 246778515.

It is an arithmetic number, because the mean of its divisors is an integer number (489690846232).

Almost surely, 2^{20351630571342} is an apocalyptic number.

20351630571342 is an abundant number, since it is smaller than the sum of its proper divisors (26658690666930).

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

20351630571342 is a wasteful number, since it uses less digits than its factorization.

20351630571342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83082 (or 82945 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 42.

The spelling of 20351630571342 in words is "twenty trillion, three hundred fifty-one billion, six hundred thirty million, five hundred seventy-one thousand, three hundred forty-two".