20345196102 has 64 divisors (see below), whose sum is σ = 51042299904. Its totient is φ = 5252027040.

The previous prime is 20345196071. The next prime is 20345196103. The reversal of 20345196102 is 20169154302.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20345196103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59778 + ... + 210389.

It is an arithmetic number, because the mean of its divisors is an integer number (797535936).

Almost surely, 2^20345196102 is an apocalyptic number.

20345196102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20345196102 is an abundant number, since it is smaller than the sum of its proper divisors (30697103802).

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

20345196102 is a wasteful number, since it uses less digits than its factorization.

20345196102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270353.

The product of its (nonzero) digits is 12960, while the sum is 33.

The spelling of 20345196102 in words is "twenty billion, three hundred forty-five million, one hundred ninety-six thousand, one hundred two".