65507769090 has 80 divisors (see below), whose sum is σ = 178265501568. Its totient is φ = 17258253984.

The previous prime is 65507769037. The next prime is 65507769091. The reversal of 65507769090 is 9096770556.

65507769090 is a `hidden beast` number, since 65 + 507 + 76 + 9 + 0 + 9 + 0 = 666.

It is a super-3 number, since 3×65507769090³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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

It is not an unprimeable number, because it can be changed into a prime (65507769091) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 419962 + ... + 554421.

Almost surely, 2^65507769090 is an apocalyptic number.

65507769090 is an abundant number, since it is smaller than the sum of its proper divisors (112757732478).

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

65507769090 is a wasteful number, since it uses less digits than its factorization.

65507769090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974485 (or 974476 counting only the distinct ones).

The product of its (nonzero) digits is 3572100, while the sum is 54.

The spelling of 65507769090 in words is "sixty-five billion, five hundred seven million, seven hundred sixty-nine thousand, ninety".