20345030521402 has 32 divisors (see below), whose sum is σ = 31666964544000. Its totient is φ = 9792818472960.

The previous prime is 20345030521393. The next prime is 20345030521411. The reversal of 20345030521402 is 20412503054302.

It is an interprime number because it is at equal distance from previous prime (20345030521393) and next prime (20345030521411).

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 289577974 + ... + 289648222.

It is an arithmetic number, because the mean of its divisors is an integer number (989592642000).

Almost surely, 2^{20345030521402} is an apocalyptic number.

20345030521402 is a deficient number, since it is larger than the sum of its proper divisors (11321934022598).

20345030521402 is a wasteful number, since it uses less digits than its factorization.

20345030521402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94678.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 20345030521402 its reverse (20412503054302), we get a palindrome (40757533575704).

The spelling of 20345030521402 in words is "twenty trillion, three hundred forty-five billion, thirty million, five hundred twenty-one thousand, four hundred two".