Search a number
-
+
6896907957980 = 225344845397899
BaseRepresentation
bin110010001011100111110…
…1111111011011011011100
3220102100010101002121212202
41210113033233323123130
51400444331414123410
622400221253151032
71311166544240015
oct144271757733334
926370111077782
106896907957980
112219a64816317
1293480062b478
133b04b6349131
1419bb5269000c
15be60ecddca5
hex645cfbfb6dc

6896907957980 has 12 divisors (see below), whose sum is σ = 14483506711800. Its totient is φ = 2758763183184.

The previous prime is 6896907957931. The next prime is 6896907957983. The reversal of 6896907957980 is 897597096986.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6896907957983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172422698930 + ... + 172422698969.

It is an arithmetic number, because the mean of its divisors is an integer number (1206958892650).

Almost surely, 26896907957980 is an apocalyptic number.

It is an amenable number.

6896907957980 is an abundant number, since it is smaller than the sum of its proper divisors (7586598753820).

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

6896907957980 is a wasteful number, since it uses less digits than its factorization.

6896907957980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344845397908 (or 344845397906 counting only the distinct ones).

The product of its (nonzero) digits is 3703553280, while the sum is 83.

The spelling of 6896907957980 in words is "six trillion, eight hundred ninety-six billion, nine hundred seven million, nine hundred fifty-seven thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 344845397899 689690795798 1379381591596 1724226989495 3448453978990 6896907957980