63400993835 has 8 divisors (see below), whose sum is σ = 76091503056. Its totient is φ = 50713921440.

The previous prime is 63400993829. The next prime is 63400993883. The reversal of 63400993835 is 53839900436.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-63400993835 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 818444 + ... + 892553.

It is an arithmetic number, because the mean of its divisors is an integer number (9511437882).

Almost surely, 2^63400993835 is an apocalyptic number.

63400993835 is a deficient number, since it is larger than the sum of its proper divisors (12690509221).

63400993835 is a wasteful number, since it uses less digits than its factorization.

63400993835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718413.

The product of its (nonzero) digits is 2099520, while the sum is 50.

The spelling of 63400993835 in words is "sixty-three billion, four hundred million, nine hundred ninety-three thousand, eight hundred thirty-five".