20361025661340 has 96 divisors (see below), whose sum is σ = 70167226913280. Its totient is φ = 4295952665856.

The previous prime is 20361025661311. The next prime is 20361025661351. The reversal of 20361025661340 is 4316652016302.

It is a super-3 number, since 3×20361025661340³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1864557330 + ... + 1864568249.

It is an arithmetic number, because the mean of its divisors is an integer number (730908613680).

Almost surely, 2^{20361025661340} is an apocalyptic number.

20361025661340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20361025661340 is an abundant number, since it is smaller than the sum of its proper divisors (49806201251940).

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

20361025661340 is a wasteful number, since it uses less digits than its factorization.

20361025661340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3729125611 (or 3729125609 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

Adding to 20361025661340 its reverse (4316652016302), we get a palindrome (24677677677642).

The spelling of 20361025661340 in words is "twenty trillion, three hundred sixty-one billion, twenty-five million, six hundred sixty-one thousand, three hundred forty".