63477837540 has 768 divisors, whose sum is σ = 233667624960. Its totient is φ = 14178447360.

The previous prime is 63477837529. The next prime is 63477837569. The reversal of 63477837540 is 4573877436.

63477837540 is a `hidden beast` number, since 63 + 4 + 7 + 7 + 8 + 37 + 540 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 284653869 + ... + 284654091.

It is an arithmetic number, because the mean of its divisors is an integer number (304254720).

Almost surely, 2^63477837540 is an apocalyptic number.

63477837540 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 63477837540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116833812480).

63477837540 is an abundant number, since it is smaller than the sum of its proper divisors (170189787420).

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

63477837540 is a wasteful number, since it uses less digits than its factorization.

63477837540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361 (or 353 counting only the distinct ones).

The product of its (nonzero) digits is 11854080, while the sum is 54.

The spelling of 63477837540 in words is "sixty-three billion, four hundred seventy-seven million, eight hundred thirty-seven thousand, five hundred forty".