65401608963 has 8 divisors (see below), whose sum is σ = 87234322176. Its totient is φ = 43584984200.

The previous prime is 65401608947. The next prime is 65401608989. The reversal of 65401608963 is 36980610456.

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

It is a cyclic number.

It is not a de Polignac number, because 65401608963 - 2⁴ = 65401608947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65401603963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4012623 + ... + 4028888.

It is an arithmetic number, because the mean of its divisors is an integer number (10904290272).

Almost surely, 2^65401608963 is an apocalyptic number.

65401608963 is a deficient number, since it is larger than the sum of its proper divisors (21832713213).

65401608963 is a wasteful number, since it uses less digits than its factorization.

65401608963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8044225.

The product of its (nonzero) digits is 933120, while the sum is 48.

It can be divided in two parts, 6540 and 1608963, that added together give a triangular number (1615503 = T₁₇₉₇).

The spelling of 65401608963 in words is "sixty-five billion, four hundred one million, six hundred eight thousand, nine hundred sixty-three".