65478250761 has 64 divisors (see below), whose sum is σ = 112942663680. Its totient is φ = 32753756160.

The previous prime is 65478250759. The next prime is 65478250769. The reversal of 65478250761 is 16705287456.

It is not a de Polignac number, because 65478250761 - 2¹ = 65478250759 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65478250769) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 789570 + ... + 868548.

It is an arithmetic number, because the mean of its divisors is an integer number (1764729120).

Almost surely, 2^65478250761 is an apocalyptic number.

It is an amenable number.

65478250761 is a deficient number, since it is larger than the sum of its proper divisors (47464412919).

65478250761 is a wasteful number, since it uses less digits than its factorization.

65478250761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79134.

The product of its (nonzero) digits is 2822400, while the sum is 51.

The spelling of 65478250761 in words is "sixty-five billion, four hundred seventy-eight million, two hundred fifty thousand, seven hundred sixty-one".