642361012700 has 216 divisors, whose sum is σ = 1552585576080. Its totient is φ = 230491008000.

The previous prime is 642361012637. The next prime is 642361012717. The reversal of 642361012700 is 7210163246.

It is a super-2 number, since 2×642361012700² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 373247840 + ... + 373249560.

Almost surely, 2^642361012700 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 642361012700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (776292788040).

642361012700 is an abundant number, since it is smaller than the sum of its proper divisors (910224563380).

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

642361012700 is a wasteful number, since it uses less digits than its factorization.

642361012700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2149 (or 2131 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

Adding to 642361012700 its reverse (7210163246), we get a palindrome (649571175946).

The spelling of 642361012700 in words is "six hundred forty-two billion, three hundred sixty-one million, twelve thousand, seven hundred".