245964535640 has 32 divisors (see below), whose sum is σ = 566290446480. Its totient is φ = 96097771392.

The previous prime is 245964535637. The next prime is 245964535643. The reversal of 245964535640 is 46535469542.

It is an interprime number because it is at equal distance from previous prime (245964535637) and next prime (245964535643).

It is a super-3 number, since 3×245964535640³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245964535643) 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, 71499599 + ... + 71503038.

Almost surely, 2^245964535640 is an apocalyptic number.

245964535640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245964535640 is an abundant number, since it is smaller than the sum of its proper divisors (320325910840).

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

245964535640 is a wasteful number, since it uses less digits than its factorization.

245964535640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143002691 (or 143002687 counting only the distinct ones).

The product of its (nonzero) digits is 15552000, while the sum is 53.

The spelling of 245964535640 in words is "two hundred forty-five billion, nine hundred sixty-four million, five hundred thirty-five thousand, six hundred forty".