63761436420 has 144 divisors (see below), whose sum is σ = 196763945280. Its totient is φ = 15415868160.

The previous prime is 63761436383. The next prime is 63761436439. The reversal of 63761436420 is 2463416736.

63761436420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×63761436420³ (a number of 33 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2739954 + ... + 2763126.

Almost surely, 2^63761436420 is an apocalyptic number.

63761436420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63761436420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98381972640).

63761436420 is an abundant number, since it is smaller than the sum of its proper divisors (133002508860).

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

63761436420 is a wasteful number, since it uses less digits than its factorization.

63761436420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23586 (or 23573 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 42.

The spelling of 63761436420 in words is "sixty-three billion, seven hundred sixty-one million, four hundred thirty-six thousand, four hundred twenty".