63748491642 has 64 divisors (see below), whose sum is σ = 157829990400. Its totient is φ = 18906701040.

The previous prime is 63748491589. The next prime is 63748491671. The reversal of 63748491642 is 24619484736.

63748491642 is a `hidden beast` number, since 6 + 37 + 484 + 91 + 6 + 42 = 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 31 ways as a sum of consecutive naturals, for example, 1113792 + ... + 1169627.

It is an arithmetic number, because the mean of its divisors is an integer number (2466093600).

Almost surely, 2^63748491642 is an apocalyptic number.

63748491642 is an abundant number, since it is smaller than the sum of its proper divisors (94081498758).

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

63748491642 is a wasteful number, since it uses less digits than its factorization.

63748491642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2283488 (or 2283482 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 54.

The spelling of 63748491642 in words is "sixty-three billion, seven hundred forty-eight million, four hundred ninety-one thousand, six hundred forty-two".