69209400645 has 160 divisors (see below), whose sum is σ = 155187622656. Its totient is φ = 28667520000.

The previous prime is 69209400581. The next prime is 69209400707. The reversal of 69209400645 is 54600490296.

It is not a de Polignac number, because 69209400645 - 2⁶ = 69209400581 is a prime.

It is a super-2 number, since 2×69209400645² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 69209400645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 9882145 + ... + 9889145.

Almost surely, 2^69209400645 is an apocalyptic number.

It is an amenable number.

69209400645 is an abundant number, since it is smaller than the sum of its proper divisors (85978222011).

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

69209400645 is a wasteful number, since it uses less digits than its factorization.

69209400645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7353 (or 7344 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 69209400645 in words is "sixty-nine billion, two hundred nine million, four hundred thousand, six hundred forty-five".